Category Archives: big cats

Episode 382: Smilodon, the Sabertoothed Cat

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Thanks to Luke for suggesting this week’s topic: Smilodon, the saber-toothed cat, AKA the sabertooth tiger!

Further reading:

Did sabertooth tigers purr or roar?

The double-fanged adolescence of saber-toothed cats

We don’t know for sure what Smilodon looked like, but it might have been something like this:

An artist’s rendition of an adolescent Smilodon with doubled fangs [picture from second link above]:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’re going to learn about an animal suggested by Luke, the sabertooth tiger, also called the sabertooth cat since it wasn’t actually a tiger, also called smilodon after its scientific name. We’ve talked about it before, way back in episode 34, but a lot of new studies have been published since then and we know a lot more about this terrifying-looking animal!

The genus of the saber-toothed cat is Smilodon, so that’s mostly what I’m going to call it in this episode. It’s classified as a member of the family Felidae, which is the same family where you find domestic cats, wildcats, big cats, and lots of extinct animals like the cave lion, but Smilodon wasn’t closely related to what we think of as cats. There were at least three species of saber-tooth cats in the genus Smilodon that we know of, but it had many other similar-looking relatives.

Smilodon is best known from the La Brea tar pits in Los Angeles, California, where the remains of hundreds of individuals have been discovered. That’s a big reason why we know so much about Smilodon, especially the species Smilodon fatalis that lived in North America and parts of South America. An even bigger species lived exclusively in South America, while both were probably descended from a smaller species that also lived in South America.

S. fatalis is estimated to have grown up to 39 inches tall at the shoulder, or 99 cm, while S. populator stood at an estimated 47 inches tall, or 119 cm. That’s almost four feet tall. Some full-grown humans are that height! Smilodon was so stocky and heavily muscled that it probably looked more like a bear than a cat. Its had a broad head and jaws that could open much wider than most modern animals, which allowed it to deploy its most deadly weapon, its saber teeth, without its jaw getting in the way.

Smilodon’s saber teeth were as much as 11 inches long, or 28 cm, although S. fatalis typically had teeth around 8 inches long, or 20 cm. Big as they were, the saber teeth were also relatively delicate. A young Smilodon didn’t start growing its big teeth until it was about a year old, and even then it had to learn how to use them so they wouldn’t break. Luckily for adolescent smilodons, they didn’t lose their baby fangs until they were fully grown.

Most mammals only grow two sets of teeth in our lifetimes. The first set is usually called baby teeth or milk teeth. As the baby grows up, its adult teeth start growing in one at a time. The adult tooth pushes at the baby tooth until it gets loose and either comes out on its own or, in the case of me in second grade, I asked to go to the bathroom and then spent half an hour twisting at a loose baby tooth until it finally came out, along with some blood. But I got a quarter that night from the tooth fairy. (Kids, maybe don’t do that.)

In the case of a young smilodon’s saber teeth, they grew in just next to the baby fangs. Instead of pushing the baby fangs out, the new teeth grew alongside them and even had a groove for the baby teeth to fit into. When scientists first discovered preserved jaws with these double fangs, they thought it was a fluke, that sometimes the new teeth came in wrong and didn’t push the old teeth out. That happens in humans sometimes too and then you have to go to the dentist to get the old baby teeth taken out. But paleontologists kept finding these double toothed jaws, and only in adolescent smilodons.

Finally a team of scientists studied the teeth carefully and made a surprising discovery. The baby fang stayed in place next to the saber tooth until the animal was about two and a half years old, at which time the baby fang finally fell out. In early 2024 the team published their study, which concluded that these double teeth acted sort of like a set of training wheels. Training wheels on a bicycle keep a new rider from tipping over sideways, and the doubled fangs kept the saber teeth from getting bent sideways until they broke. By the time the baby fang fell out, the smilodon had lots of experience hunting properly and no longer needed training wheels.

Smilodon legs are relatively short, which suggests it didn’t do a lot of running after prey. It was probably an ambush hunter and may have hunted in groups, sort of like lions do today. Some scientists think that instead of big groups, smilodon lived in small family groups of a mated pair and their offspring, which they took care of for several years. There’s even some evidence that adult animals with debilitating injuries or congenital issues that meant they couldn’t hunt were taken care of by other adults.

Smilodon ate large animals like ground sloths, horses, deer, camelids, and glyptodonts. It went extinct about 11,000 years ago, the same time that a lot of its prey went extinct too. We don’t know what color it was, but modern cats that hunt in forested areas generally have spots while cats that hunt in open areas generally have plain coats. Since smilodon lived in a variety of habitats, from forests to deserts, its coat pattern and coloration may have varied from region to region. It also had a short tail like a bobcat instead of a long tail like most modern cats.

Let’s finish with one last important detail about smilodon. Did it purr or did it roar? Remember that modern cats can either do one or the other, not both. A tiger can’t purr, while a wildcat can’t roar. In modern cats, the difference appears to be due to the number of hyoid bones in the throat. Humans have a single hyoid bone, which anchors the larynx in place, but cats have a whole row of them. Cats that can roar have seven of these tiny bones, while cats that can purr have nine of them.

Smilodon had seven hyoid bones. Therefore, scientists assumed, smilodon could roar but not purr. But a study from 2023 suggests it’s not that simple. The hyoid bones in purring cats are shaped differently from those in roaring cats. Smilodon only had seven hyoid bones, but some of them were shaped like really big purring hyoid bones, big even for the animal’s large size. Scientists aren’t sure if that means smilodon was able to purr in a deep register, if it could roar instead but with a really deep voice compared to modern cats, or if it made some other sound that we can’t even guess at.

In other words, I’m sorry, we don’t know if smilodon roared or purred, and we probably won’t know for sure until someone invents a time machine. Personally, I like to think that smilodon could purr and roar, and that it could also meow, but in a really deep voice. MEOW.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 367: The Marozi

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Thanks to Pranav for suggesting this mystery big cat this week, the marozi!

Further reading:

From Black Lions to Living Sabre-Tooths: My Top Ten Mystery Cats

Spotted Lions

A young lioness who still has some of her cub spots:

Subadult lions who still have a lot of cub spots:

The skin of an animal supposedly killed in 1931 and said to be a marozi:

Two photos of a “leopon,” a lion-leopard hybrid bred in captivity in a Japanese zoo:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’re going to learn about a mystery animal suggested by Pranav. It’s the marozi, a big cat from the mountains of Kenya.

Kenya is in east Africa, and humans have lived in what is now Kenya since humans existed. Because of this, usually when we talk about Kenya or east Africa, we’re talking about hominins, but today we’re talking about big cats.

Kenya is home to a lot of animals you think of when someone mentions the animals of Africa, like elephants and giraffes, and it’s also home to three big cats: lions, leopards, and cheetahs. The lion is generally a tawny brown color although different individuals and populations can be various shades of brown or gray. A lion cub is born with dark spots, and as it grows the spots fade. Sometimes a young adult lion will still have some spots, especially on its legs and belly, but in general an adult lion has no spots at all. In comparison, both the leopard and the cheetah are famous for their spots.

The lion prefers to live in savannas and open woodlands. These days it’s only found in a few parts of India, along with various places in sub-Saharan Africa. This just means south of the Sahara desert. In the past, though, the lion had a much larger range. It lived throughout most of Africa, the Middle East, southern Asia, and even southern Europe. Overhunting drove it to extinction in many parts of its historic range, which is called extirpation. I’ve used the term before but it specifically means that an animal has been driven to extinction in one area where it once lived, but it isn’t extinct in other areas. Some subspecies of lion have gone extinct, and the lions who remain are vulnerable to habitat loss, poaching, and many other factors. Just because lions are common in zoos doesn’t mean lions in the wild are doing fine.

The same is true of the cheetah, which has an even smaller range than the lion these days but which was once common throughout Africa and the Middle East along with a lot of southern Asia and Europe. We talked about the cheetah in episode 145. It’s actually not closely related to the lion or the leopard, and in fact genetic testing reveals that it’s most closely related to the puma of North America.

The leopard, on the other hand, is a very close relation to the lion. Both belong to the same genus, Panthera, which also includes tigers, jaguars, and snow leopards, but the lion and leopard are the closest cousins. While it’s also vulnerable to habitat loss, poaching, and other factors, it’s more widespread than the lion and cheetah. It lives throughout much of sub-Saharan Africa, Asia–especially India–and even parts of eastern Russia, and in the past it was even more widespread. It prefers forests where its spots help it blend in with dappled sun and shade.

So, the lion, the leopard, and the cheetah all live in Kenya, but there’s another big cat that’s supposed to live there too. It’s called the marozi, also sometimes called the spotted lion.

Stories of lions that have spots like a leopard go back for centuries among the local people. The spotted lion is supposed to be small and the male either has no mane or only a small one. It’s supposed to live in the mountains and is solitary instead of living in family groups like ordinary lions. In fact, “marozi” supposedly means “solitary lion” in the local language. Instead of living in open grasslands, it lives in thick forest where a spotted coat and smaller body size would be useful, allowing it to maneuver through the trees more easily while not being seen.

It wasn’t until the colonial era in the late 19th and early 20th centuries that Europeans became aware of the marozi. The first known sighting of a spotted lion by a European occurred in 1903, when a British soldier reported seeing more than one in the mountains of Kenya. He said the lions were darker in color than an ordinary lion, with leopard-like rosette markings. In 1924, a game warden reported killing a spotted lioness and her cubs, with the lioness having just as many spots as the babies.

In 1931 a farmer shot two small spotted lions in the mountains. He said they were fully grown despite their small size, but they had even more spots than lion cubs do. One was a male and he had a sparse, short mane. The farmer kept the male’s skin, which eventually made its way to the Natural History Museum in London, possibly with the lion’s skull too, although it’s not clear if the skull actually belongs to the same animal. As far as I could find out, no one has tried to test the skin and skull genetically.

Other people, including hunters and game wardens, reported seeing spotted lions in high elevations where ordinary lions didn’t live, with stories continuing through at least the 1960s. Similar stories of a spotted lion have been collected from mountains in other parts of east and central Africa, including Ethiopia, Rwanda, Uganda, and Cameroon, where it has different local names. But so far we don’t have any photographs or a specimen.

There are a few hypotheses about what the marozi might be. One suggestion is that it’s actually a hybrid of a leopard and a lion. Because leopards and lions are so closely related, they can interbreed and produce offspring, although as far as we know this has only happened in captivity. In the wild, lions are actually aggressive towards leopards. A lion will steal a leopard’s food and will sometimes even kill leopards, and as a result leopards try to avoid lions. Since leopards prefer thick forest and lions prefer open forest or grasslands, they don’t cross paths all that often anyway.

In the late 1950s into the early 1960s, a zoo in Japan kept a male leopard and a female lion in the same enclosure to see if they would mate. They did, and eventually they had two litters together. The cubs were larger and heavier than leopards but not as big as lions, and while they generally looked like lions they had leopard spots. The males had small manes.

This sounds a lot like reports of the marozi, but again, in the wild lions and leopards mostly avoid each other. The only time a lion and a leopard would consider each other potential mates instead of potential trouble is when they’re put together artificially as in the Japanese zoo. Even if an occasional leopard and lion do sometimes breed in the wild, it wouldn’t happen often enough to cause all the sightings documented about the marozi. Besides, the marozi is only reported from the mountains, where lions don’t live.

Another hypothesis is that there’s a population of ordinary lions that have moved into the mountains to escape factors like habitat loss, poaching, and a decline in prey animals, and that people occasionally see a young adult lion that hasn’t completely lost its cub spots. This isn’t too likely either since stories of the marozi go back to long before these modern pressures on lion populations.

There might very well be an unknown, very rare species or subspecies of lion that has always lived in the mountains in parts of east and central Africa, and that it does actually have spots as an adult. If this is the case, hopefully it’s safe in its mountain habitat from the pressures faced by ordinary lions. Let’s hope also that it comes to the attention of scientists soon so it can be studied and protected.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 298: The Tantanoola Tiger

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This week we’re examining the Tantanoola Tiger, a mystery animal that probably wasn’t a tiger…but what was it? This episode is rated two ghosts out of five for monster month spookiness! Thanks to Kristie for sharing her photos of the Tantanoola tiger!

Happy birthday to ME this week! I’ve decided to turn 25 again. That was a good year.

Further reading:

The Tasmanian tiger was hunted to extinction as a ‘large predator’–but it was only half as heavy as we thought

The grisly mystery of the murderous Tantanoola Tiger (Please note that the end of this article has some disturbing details not appropriate for younger readers. However, true crime enthusiasts will just shrug.)

Kristie and her kids reacting to the  taxidermied Tantanoola Tiger:

Kristie’s picture of the taxidermied Tantanoola Tiger. WHO DID THIS TO YOU, TIGER?

The numbat is striped but too small to fit the description of the “tiger”:

Our friend the thylacine, probably not strong enough to kill a full-grown sheep:

Tigers are really really really big. Also, don’t get this close to a tiger:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This past spring, when I was researching mysterious accounts of big cats spotted in Australia for episode 274, I considered including the Tantanoola Tiger. That was Kristie and Jason’s episode, and Kristie casually mentioned that she’d seen the stuffed Tantanoola tiger on display and wasn’t impressed. She even sent me pictures, which we’ll get to in a moment.

In the end, I decided the Tantanoola Tiger deserved its own episode, because it’s completely bonkers, and that it needed to be in monster month, because parts of the story are weird and creepy. I give it two ghosts out of five on our spookiness scale, so it’s not too spooky but it’s more than a little spooky.

The story starts in the southeastern part of South Australia at the very end of the 19th century. The little town of Tantanoola was home to a lot of sheep farmers, and in the early 1890s something was killing and eating sheep.

For years there had been rumors that a Bengal tiger had escaped from a traveling circus in 1884 and was living in the area, so once half-eaten sheep carcasses started turning up near Tantanoola, people assumed the tiger was to blame.

There was definitely something unusual killing sheep. Aboriginal shearers reported seeing an animal they didn’t recognize, something that frightened their dogs. Paw prints were found that measured over 4 inches across, or 11 cm, which is really big for a dog’s print although that’s what it resembled. It also happens to be a reasonable size for a small tiger, although a big tiger’s paw is usually more like 6 inches across, or almost 16 cm.

In 1892, a couple out driving in their buggy saw a striped animal cross the road ahead of them. They reported it as brown with stripes and a long tail. They estimated its length as three feet long not counting its tail, or about a meter, 5 feet long including the tail, or 1.5 meters. This is actually really short for a full-grown tiger. A big male Bengal tiger can grow more than ten feet long, or over 3 meters, including the tail, and even a small female Bengal tiger is about eight feet long, or 2.5 meters, including the tail.

There aren’t a lot of animals native to Australia that have stripes. The numbat has stripes and does live reasonably close to Tantanoola, although it was driven to extinction in the area by the late 19th century. But the numbat is only about 18 inches long, or 45 cm, including its tail, and it looks kind of like a squirrel. It eats insects, especially termites, which it licks up with a long, sticky tongue like a tiny anteater. It’s even sometimes called the banded anteater even though it’s a marsupial and not related to anteaters at all. Plus, it doesn’t eat very many ants. The female numbat doesn’t have a pouch, but while her babies are attached to her teats they’re protected by long fur and the surrounding skin, which swells up a little while the mother is lactating.

So the animal seen in 1892 probably wasn’t a numbat, but it also probably wasn’t actually a tiger. The people who saw it said it definitely wasn’t a dingo either.

In May 1893, a tiger hunt was organized but found nothing out of the ordinary, but in September of that year a farmer found huge paw prints after his dogs alerted him to an intruder during the night. The prints were over 4 inches across, or 11 cm, and this time a policeman took plaster casts of them. A zoologist at the Adelaide Zoo examined the casts and said that they weren’t tiger prints but were instead from some kind of canid.

The next month, in October, a farmer reported that he’d killed the Tantanoola tiger. But it wasn’t a tiger and wasn’t even any kind of wolf relation. Instead, it was a feral hog that had been killing his sheep for years and evading his attempts to kill it. The boar measured 9 feet from nose to tail, or 2.7 meters, and while it was probably responsible for some sheep killing, it wasn’t the Tantanoola tiger. The so-called tiger kept on killing sheep.

In August of 1894 a 17-year-old named Donald Smith saw a strange animal dragging a struggling sheep into the trees. The mystery animal was light brown with darker stripes and stood about two and a half feet high at the shoulder, or 75 cm, and was over four feet long, or 1.3 meters. Donald thought it was a tiger, although he’d never seen a tiger before. He said the stripes on its body were dull, but they were much more distinct on its head. When police and trackers arrived at the area later, after Donald alerted them, they found claw marks, bloody tufts of wool, and big paw prints.

Finally, the following August, two sharpshooters set out to hunt the so-called tiger and actually found it. It was just barely dawn when they saw what looked like a gigantic dog grab a sheep and wrestle it to the ground. One of the men shot the animal and killed it.

The Tantanoola tiger definitely wasn’t a tiger. It was more like a dog, but it was much bigger than any dog they knew and certainly much bigger than a dingo. It was three feet tall at the shoulder, or 91 cm, and 5 feet long, or 1.5 meters, including the tail. It was mostly dark brown with patches of lighter brown and gray, and yellowish legs. Its paws were over 4 inches across, or 11 cm. But it didn’t have stripes. It was identified as a wolf, although what kind of wolf varied. Suggestions included a European wolf, a Syrian wolf, or an Arabian wolf.

We still don’t know exactly what kind of wolf or related animal the animal was, but we do still have the stuffed specimen. It’s on display in the Tantanoola Hotel, which is where Kristie and her kids saw it several years ago. She took pictures and was kind enough to give me permission to use them, and please, I beg you, even if you’ve never clicked through to see any pictures I’ve posted before, please look at these. There are two, the reaction shot of Kristie and her kids looking at the Tantanoola tiger, and a picture of the tiger itself. You will laugh until you cry.

As we’ve mentioned a few times before, taxidermy requires a lot of work and artistic ability. Whoever stuffed and mounted the Tantanoola tiger lacked some of the artistic skills. It looks really goofy. Really, really goofy. But at least we have the body, although unfortunately it hasn’t been DNA tested so we still don’t know exactly what kind of wolf or wolf relation it is. But that’s not the only mystery.

In fact, there are three separate mysteries here. First, how did the wolf get to Australia? Second, what was the striped animal people were seeing? Third, what was killing sheep? Because even after the wolf was shot, sheep kept being killed and the striped animal was occasionally spotted.

One suggestion is that the striped animal was a thylacine. We’ve talked about it a few times before, most recently in episode 274. The thylacine was still alive in Tasmania in the 1890s, but it had been extinct in mainland Australia for about 3,000 years. It’s possible that someone brought a thylacine to mainland Australia where it escaped or was set loose, just as the wolf had to have been brought to Australia.

Then again, thylacines weren’t very strong. They mostly ate small animals, especially the Tasmanian native hen, which is about the size of a big flightless chicken with long legs. It was much smaller than a wolf and much, much smaller than a tiger. If there was a thylacine around Tantanoola at the time, it probably wasn’t the animal killing sheep.

Even though farmers had shot a huge feral hog and a wolf, neither of which belonged in Australia, sheep kept being killed. No one ever figured out what the striped animal was, and eventually it stopped being seen. The 19th century turned into the 20th century, and more and more sheep started disappearing—hundreds of them every year. In this case, though, they weren’t being eaten. They just disappeared.

Toward the end of 1910 the mystery was accidentally solved. Three hunters smelled an intense stench of death coming from some trees. It was so strong that they went to investigate. They found a path into the trees and came across something awful.

There were piles of dead sheep and lambs everywhere, dozens of them. They’d been skinned and the skins were hanging on wires strung through the trees. But the path continued, and when the hunters went farther, they found even more dead sheep.

It took a few weeks, but the police eventually tracked down the culprit, a local man who had been selling a lot of sheepskins on the sly for years despite not raising sheep himself. He’d killed thousands of sheep to sell their skins, leaving the bodies to just rot. He’d also done some other terrible crimes, so if you click through to read the article I’ve linked to in the show notes, please be aware that it’s not appropriate for younger readers. He’d also been convicted of sheep stealing in 1899, but in Victoria, not South Australia.

The sheep rustler wasn’t the Tantanoola tiger, because he was probably a good 140 miles away, or 225 km, when it was killing sheep. Besides, the so-called tiger actually ate the sheep it killed. But once he was caught and sentenced to jail, the Adelaide Evening Journal newspaper wrote about it with the headline “The Tiger Caged.”

As for the striped animal, tiger or not, we still have no idea what it was.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or Podchaser, or just tell a friend. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 286: Chimerism, Mosaicism, and Venus the Cat

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Thanks to Vaughn for suggesting this week’s episode topic about Venus the cat and her unusual coat pattern!

Further reading:

Mystery Cats of the World Revisited by Dr. Karl P.N. Shuker

Further listening:

Half-siders and sea monkeys Patreon episode from December 2018 (unlocked episode)

Venus the cat:

“Half-sider” birds can be spectacular:

Half-side chimeras are not just restricted to birds:

Ranger the “black lion” (photo by Peter Adamson, from this site which you should also read). Note the black patch on his right front leg:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week I had planned to release our updates episode, but I didn’t have time to finish it. The 2022 updates episode will run in September instead, since we’re doing Invertebrate August again this year!

Way back at least a year ago and possibly more, Vaughn suggested we do an episode about “rare two-tone animals like Venus the cat.” I put the suggestion on my list and totally forgot about it until today, when I saw it and thought, “hmm, who’s Venus the cat?”

If you don’t already know, Venus is a beautiful cat whose coloration is mostly what’s called tortoiseshell, meaning she has a mixture of colors on her body, in her case black and orange. But Venus’s face is completely black on one side with a green eye, but orange tabby on the other side with a blue eye. She also has a white bib and white on her paws.

Venus became famous after the family who adopted her as a stray in 2009 posted pictures of her online. Her coloration is so unusual that everyone wondered what caused it. The answer is that we aren’t exactly sure, but veterinarians and experts in cat genetics do have some pretty good ideas.

There are probably several things going on genetically with Venus that resulted in her interesting coloration. Her different-colored eyes are one result. When an animal has different-colored eyes, called heterochromia iridis, there are a number of possible causes, from an injury to one eye to various genetic conditions. Sometimes it’s not complete, meaning one eye may be partly a different color. It even happens in people sometimes, although it’s rare.

In Venus’s case, researchers think her heterochromia may be due to a gene that produces what’s called piebaldism. A piebald animal has white markings when an ordinary animal of the same species doesn’t have any white markings. Some animals who naturally have a white pattern may have the word pie or pied or just bald hidden in their name, such as the magpie and the bald eagle, because it used to mean just an outfit with different contrasting colors. In the story of the pied piper, the piper had on a suit made of different colors.

The white patches of a piebald animal actually don’t have any pigment, and if a white patch is over an eye, the eye may also lack pigment and appear blue. That’s pretty common in piebald or pinto horses or in some dog breeds with white markings. The piebald gene may also affect one or both eyes even if a white patch doesn’t cover the eye, which some researchers think may be the case in Venus. Her left eye is blue even though the left side of her face is orange tabby.

Venus’s unusual facial fur coloration may be due to a condition called chimerism. Chimerism happens long before an animal is born—in fact, it happens within a few hours after an egg cell is fertilized. I’ll do my best to explain it. A lot of the next section comes from a Patreon episode from 2018, and if you want to listen to the original I’ve unlocked it for anyone to listen to and put a link in the show notes.

As soon as an egg cell is fertilized, it starts to divide into more cells, which divide into more cells, which divide into more cells, and on and on. After a while, the groups of cells start to differentiate into parts of the body. Some cells become a heart, others become toes, and so on. Eventually there’s a whole finished baby ready to be born or hatched.

If there are two fertilized egg cells, they develop into two separate babies, which are fraternal twins that don’t necessarily look alike. Occasionally, a fertilized egg cell will split and each of the two resulting cells will start to develop separately. In that case, you get identical twins.

But very rarely, you start with two egg cells that should develop into fraternal twins—but for some reason, in those very first hours when each egg cell has only divided a few times, the egg cells fuse together. The cells continue to divide and develop into not two babies, but one that contains the genetic markers for both twins.

Since the resulting single baby has genes for both twins, sometimes it will show physical traits of both twins. For instance, if one twin’s genetic makeup would have developed into a green budgie, and the other twin’s genetic makeup would have developed into a blue budgie, you get a budgie that’s green on one side and blue on the other. Occasionally one side has the markings and coloration of a male, and the other side has the markings and coloration of a female. An animal with this kind of genetic anomaly is properly called a tetragametic chimera, but it’s often called a half-sider.

This doesn’t just happen in birds. Occasionally someone will come across a butterfly where the pair of wings on one side is colored like a male of that species and the pair of wings on the other side is colored like a female. Occasionally someone will adopt a kitten that’s one color on one side and a totally different color and pattern on the other side.

So I bet now you’re wondering if it happens in humans. Yes, it does! It happens occasionally in everything, including plants. Usually no one knows if a particular animal is a chimera because most of the time it doesn’t show. It’s only when it produces a spectacular coloration difference like in half-siders that anyone takes a second look.

Venus’s facial markings look a lot like those of a half-sider, but the markings on the rest of her body don’t, so she’s probably not a half-sider. That doesn’t mean she isn’t a chimera, since while all half-siders are chimeras, not all chimeras are half-siders. However, she might have a genetic mutation called mosaicism instead.

Mosaicism is similar to chimerism, but instead of being caused by two fertilized egg cells fusing together, it’s caused by a chromosomal mutation in one cell during the embryo’s very early development. The mutation is replicated as that cell divides, and then replicated in the divided cells, and so on, so that when the organism has finished developing into a baby, part of its body contains the mutation while the rest doesn’t. The part of the body with the mutation has a different genetic profile from the rest of the body.

Mosaicism can result in various physical conditions, but for the most part you can’t tell by looking if an organism exhibits mosaicism. But sometimes you can. In 1975 a lion cub was born in Glasgow Zoo in Scotland, and he had a big black patch on his chest and right front leg, with a less dark patch on his left hind leg. Since black lions are rumored to exist but have never been scientifically documented, or even photographed, this was a big deal. When Ranger the lion grew up he was introduced to several different females in hopes that he would sire cubs that also had black patches, or which were even black all over. Unfortunately Ranger seemed to be sterile and none of his mates got pregnant.

Ranger lived to be 22 years old but died before genetic testing became widespread and sophisticated. These days we know a lot more about big cat genetics and researchers are pretty sure Ranger’s black patches resulted from somatic mosaicism, which affected some of his skin cells. Since the right side of Venus’ face is solid black, some researchers think she might have a similar condition.

Whatever the cause or causes of Venus the cat’s coloration, though, one thing is for sure. She’s an absolutely beautiful cat!

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or Podchaser, or just tell a friend. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 274: Mystery Big Cats in Australia

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Thanks to Kristie and Jason, we’re going to learn about some mystery big cats reported in Australia, in particular Victoria.

Further reading:

Official big cat hunt declared a bust, so why do people keep seeing them?

Further watching:

Thylacine video from 1933, colorized

You’ll probably need to enlarge this but it’s a still from a 2018 video purportedly showing a mystery big cat, but in this frame you can see the ears are pointy, which is a sure sign of a domestic cat:

A melanistic (black) leopard and regular leopards (picture from this site). If you zoom in you can see the spot pattern on the black leopard:

A puma/cougar/mountain lion. Note the lack of spots:

A thylacine. Note the lack of spots but presence of stripes:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week is Kristie and Jason’s episode. They want everyone to learn about mysterious big cats in Australia!

Australia, of course, is home to many wonderful animals, but almost all of the native mammals are marsupials. There are no native felids of any kind in Australia, even in the fossil record. This is because Australia split off from the rest of the world’s landmasses when the supercontinent Gondwana broke apart. Marsupials actually first arose in South America and spread to Australia when the two landmasses were connected. Then, around 180 million years ago, South America and Africa split off from the rest of Gondwana, including Australia. Most of South America’s marsupials went extinct as placental mammals arose and became more and more numerous, but Australia was on its own starting about 30 to 50 million years ago. Marsupials never had to compete with placental mammals during most of that time, except for bats, and the marsupials thrived.

Humans first populated Australia at least 41,000 years ago and probably more like 65,000 years ago. The first dingoes, a type of dog, were introduced around 5,000 years ago. The first European sighting of Australia was in 1606, and less than 200 years later the British colonized the continent, bringing with them invasive species like cats, rats, cattle, sheep, foxes, rabbits, deer, and lots more, which have driven many indigenous animals to extinction. But while domestic cats are common in Australia, as far as we know no one has ever deliberately released enough big cats to form a breeding population.

In that case, though, why are there so many reports of big cats in parts of Australia?

If you remember way back in episode 52, where we talked about big cats in Britain, there were lots of stories and a certain amount of evidence that individual big cats were occasionally found in the country. Ultimately, though, there’s no proof of a breeding population of big cats. The same is more or less true in Australia, but Australia is so much bigger and so much less populated than Britain, it would be easy for a small population of big cats to hide. And maybe they’re not actually big cats but some other animal, something that is native to Australia.

Kristie and Jason have lots of experience searching for big cats in central Victoria, Australia. They even helped with the research of a book about big cat sightings. Victoria is in southeastern Australia and is the smallest state. If you walked south from central Victoria to the coast, and then got on a boat and kept going south, you’d run into Tasmania. If you walked north instead, eventually you’d come to New South Wales but that is going to be a long walk. Victoria is mostly temperate and rainy but has tall mountains, semi-arid plains, and lots of rivers.

As Kristie pointed out, different parts of Australia have different stories about mystery big cats, but I’m mostly going to talk about sightings in Victoria, just to narrow it down.

To start us off, now that we have some background information, here’s a clip from the conversation I had with Kristie. The audio isn’t great, unfortunately, but it’s definitely interesting.

[quote of Kristie’s account:]

“Jason and I used to go puma hunting. It was very scary. So, there was this bloke we used to go and visit. I’m not going to name any names; I’m not even going to tell you exactly where he was other than he was in Castlemaine along a railway line, a disused railway line. So, the story goes that this man (let’s just take 80% of what he says with a grain of salt), he’d gone up to get a horse from a paddock outside their house that they lived in, on a dirt road near the railway. There was lots of long grass on the side of the road. He said he went to get the horse and was bringing the horse back to the house paddock, and he felt like he was being watched. Not a good feeling. And then he heard something that sounded like a growl coming from in the grass. And the horse had a bit of a moment. He continued on his way—he was safe, the horse was safe! No animals were hurt in the making of this story. From then on he said he and his wife would hear things walking around their house and it would just feel really weird. They would say that they actually saw these cats walking along the road.

“I would call Jason and we’d get on a motorbike and we’d go down, probably about a 5 or 10 minutes motorbike ride. Of course whenever we got there, there was nothing there. Occasionally you might see something on the dirt road, because there was a bit of fine dirt on there that maybe you could find a footprint on there.

“You would hear dogs bark, hear them off in the distance when whatever it was out there was on the move. It would actually follow the creek down and the railway line and you would get a succession of dog barks.”

Kristie went on to say that they’d even found and taken a plaster cast of a large paw print that looked different from a dog’s print, but the veterinarian they took it to wasn’t able to determine whether it was made by a big cat or just a dog.

She also talked about some other evidence that their friend gave as proof of big cats living in his paddock, including swirls in the long grass that looked like a cat had flattened the grass to sleep. In that case, she also pointed out that the same thing had happened in her own yard recently and that she was pretty sure it was caused by the wind. But here’s another clip from her about an experience she had that wasn’t so easy to explain:

[quote of Kristie’s account:]

“I spent one night out in a caravan that they had in their yard, just waiting, and I heard a cough. Pumas cough, but so do kangaroos, so I don’t know. I didn’t see any kangaroos. I like to think I heard a puma cough. I honestly don’t know what I heard.”

Kristie even thinks she spotted a big cat once as she and Jason rode by on a motorbike, but by the time she realized what she’d seen, it was long gone. She said it was a large black animal with a very long tail, much longer than a domestic cat’s tail.

One theory of big cat sightings is that they’re descendants of cougars, also called pumas or mountain lions, brought to Australia as mascots by American troops during World War II but released into the wild. While WWII units from various countries did often have mascots, they were usually dogs. A few mascots were domestic cats, there were a couple of pigs, birds, and donkeys, but mascots were almost always domesticated animals that a unit adopted even though they weren’t really supposed to have them. Wild animals were rare as mascots because they were hard to handle and hard to hide from officers. While there were certainly some big cats of various kinds brought to Australia by American soldiers and released when they started getting too big and dangerous to handle, or when they were found by officers, there wouldn’t have been enough to form a breeding population.

Besides, big cat sightings go back much earlier than the 1940s. Some people blame Americans again for these earlier stories, specifically American miners who came to Australia in the mid-19th century gold rush. Supposedly they brought pet cougars that either escaped or were released into the mountains. While miners did bring animals, they were almost always dogs or pack animals like mules.

More likely, though, any big cats escaped or released into the Australian bush in the olden days came from traveling circuses or exotic animal dealers. Even so, again, there just weren’t enough big cats of any given species to result in a breeding population. But, also again, people are definitely seeing something.

The most compelling evidence for big cats in Australia is attacks on large animals like horses, cattle, calves, and sheep. Australia doesn’t have very many large predators. Dingoes are rare or unknown in Victoria these days, as are feral pigs, foxes don’t typically hunt animals larger than a rabbit or chicken, and feral dogs usually leave telltale signs when they attack livestock.

In 2012, the Victorian Department of Sustainability and Environment commissioned a study of big cat sightings in the state. The study’s aim was to determine whether a breeding population of big cats might exist, and if so, what impact it was having on the native wildlife. The team examined historical and contemporary reports of big cats, and studied photos and videos and other evidence. Its findings were inconclusive—there just isn’t enough evidence that big cats are living in Victoria, although it couldn’t rule it out either—and it recommended further investigation.

An earlier study in the 1970s by Deakin University also attempted to determine whether big cats lived in the Grampians, a national park that includes a mountain range. Its traditional name is Geriwerd. The study came to the conclusion that there probably were pumas in the Grampians, but one of the pieces of proof, a 3-inch, or 8-cm, fecal pellet, was later identified as a pellet regurgitated by a wedge-tailed eagle.

Kristie also mentioned that the wedge-tailed eagle might be the source of some claw marks found on wildlife. The wedge-tailed eagle is a large, robust bird with a wingspan over nine feet across, or 2.84 meters, and it lives throughout Australia and southern New Guinea. It’s mostly black or brown in color and has a large hooked bill and large, strong talons. It often hunts in pairs or even groups and can kill animals as large as kangaroos. Larger species of wallabies and other native animals are the eagle’s natural prey but it also eats lots of introduced animals like rabbits and foxes, and occasionally kills lambs or piglets. It also eats a lot of carrion.

Eagle attacks don’t explain everything, though, such as claw marks found on horse rugs. Horse rugs are special blankets that horses wear, especially in cold weather. There are also reports of dead sheep and goats found dragged into trees or through fences, something a dog couldn’t or wouldn’t do but a leopard or other big cat could.

In 1991 a piece of poop, more properly called scat or feces, was turned into authorities and sent for testing. Initially reports said it looked like it came from a large felid, although what species couldn’t be determined. Fortunately it was saved and was genetically examined a decade or so later, at which point it matched up to a leopard. Assuming it was actually found in the bush and wasn’t a joke by an exotic pet owner, it means there was a leopard running around in central Victoria a few decades ago for sure.

Most sightings of Australian big cats fall into two categories: black cats and tan or gray-brown cats with white bellies. As we learned in last year’s wampus cat episode, the cougar is tan or gray-brown in color, sometimes called yellowish, with a pale belly, but is never black. Melanism is common in some big cats, especially leopards and jaguars, but leopards and jaguars are always spotted. Even melanistic individuals show a faint spotted pattern up close. So if some Australian big cats are black and other Australian big cats are tan or gray-brown without spots, they’re probably not the same species. But now it’s even more complicated! How could there be two species of big cat hiding so close to people without anyone hitting one with a car or shooting one in a pasture or just getting a really good picture of one on a trail cam or just a phone?

A lot of people think that feral domestic cats are responsible for all the sightings. While some feral cats can grow larger than average for a domestic cat, especially in areas where there’s lots to eat, most are actually quite small and thin. Feral cats are definitely responsible for a lot of big cat sightings, but not all. Black domestic cats in particular stand out in fields and on bright days so might be noticed more often than other colors of cat, and it’s easy to see a big black cat in the distance, not very close to anything, and assume it’s larger than it really is. But pictures and videos of these cats are usually pretty easy to identify as domestic. Domestic cats have pointy ears set high on the head, unlike big cats who have rounded ears that are lower on the head.

One video from 2018 is often cited as proof of a big cat in Australia, although in this case it’s in New South Wales. If you check the show notes, you’ll see a still I took from the video showing the animal’s ears. They’re pointy ears so the animal has to be a domestic cat.

There’s always another possibility, of course. Maybe the big cats aren’t cats at all but rare, reclusive carnivorous marsupials. The two main contenders are the marsupial lion and the thylacine.

The marsupial lion, or Thylacoleo carnifex, isn’t actually a lion. It’s a marsupial, and in fact I should say it was a marsupial because it went extinct at least 30,000 years ago as far as we know. It was probably almost as big as a lion, though, with massive jaws and teeth that could bite through bones. It ate large animals like the giant wombat relation Diprotodon and giant kangaroos, so it would have no trouble with a sheep.

But the marsupial lion didn’t actually look like a lion either. It probably resembled a small bear in some ways, although it had a thick tail more like a kangaroo’s than a cat’s. Its method of hunting doesn’t match up with the dead animals found in Victoria either. The marsupial lion had huge claws that it used to disembowel its enemies, I mean its prey, whereas modern big cats mostly use their strong jaws to bite an animal’s neck. Also, of course, the marsupial lion went extinct a really long time ago. While there’s always a slim possibility that it’s still hanging on in remote areas, I wouldn’t place any bets on it. I don’t think it’s the real identity of the mystery big cats. There are just too many discrepancies.

The thylacine, also called the Tasmanian tiger because it lived in Tasmania and had stripes, was about the height of a big dog but much longer. It was yellowish-brown with black stripes on the back half of its body and its tail. It had relatively short legs but a very long body and its tail was thick. It was a carnivorous marsupial, mostly nocturnal.

The thylacine went extinct in mainland Australia around 3,000 years ago while the Tasmanian population was driven to extinction by white settlers in the early 20th century. But like big cat sightings, people still report seeing thylacines. Maybe people are mistaking thylacines for big cats, since a quick glimpse of a big tawny animal with a long tail could resemble a puma if the witness didn’t see its stripes or didn’t notice them in brush or shadows.

The thylacine wasn’t a very strong hunter, though, at least as far as researchers can tell. But there’s a lot we don’t know about the thylacine even though it was still alive less than 100 years ago. As Kristie says:

“Maybe it was a thylacine. Who knows?”

Kristie and Jason think most big cat sightings are explainable as feral cats and other known animals. They also pointed out that what appear to be unusual predation methods might just be caused by more than one kind of animal scavenging an already dead carcass.

But there are lots of sightings that can’t be explained away, and people occasionally find dead animals that look like they’ve been killed and eaten by a big cat instead of a dog or eagle. While there’s a low probability that a breeding population of big cats is living in Victoria, there’s a very good chance that a few individual animals are. They’re most likely escaped or released exotic pets, possibly ones that were kept illegally in the first place.

As Kristie and Jason point out, people often freak out when they’re confronted with something strange, like the possibility that a leopard is sneaking around their house. You can’t really blame them. That’s why it’s so important to find out more about these animals, because turning the unknown into the known helps people know what to do and not be so scared.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or Podchaser, or just tell a friend. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 244: The Wampus Cat

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It’s the beginning of MONSTER MONTH! This episode’s not very spooky unless you’re outside at night and hear a terrifying scream! To be fair, that would be spooky even if you don’t know anything about the wampus cat.

THE KICKSTARTER GOES LIVE IN JUST TWO DAYS!!

Further watching:

The Growling, Ferocious, Diurnal Kitty Cat: The Jaguarundi

Further reading:

My original article about the wampus cat will appear in Flying Snake #21. You can order it and back issues here and here.

The cougar:

A jaguar with her black jaguar cub (picture by Alma Leaper):

The jaguarundi looks kind of like an otter:

Jaguarundis come in different solid colors, including black or nearly black:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

It’s October at last! Yes, that best of all months, MONSTER MONTH!

This episode started out as an article I wrote for the magazine Flying Snake, which is an awesome little magazine that you might like. I’ll put a link in the show notes if you want to order a copy.

Also, in only TWO DAYS we’re kicking off our Kickstarter to fund the Strange Animals Podcast book! It’s done and now I just need to pay the people who are going to make the cover and do the interior design to make it look great! The Kickstarter will go live on Wednesday, October 6, 2021 and will run through Friday, November 5, 2021, which gives you lots of time to decide if you want to back the project. On Wednesday I’ll be releasing a bonus episode to remind you that the Kickstarter has begun, explain exactly how Kickstarter works in case you’re not sure, and share a chapter from the audio version of the book about a mystery animal we’ve never covered before. If you want to look at the Kickstarter page now, though, there’s a link in the show notes so you can look at it and even set it so that Kickstarter will send you an email when the campaign starts. There’s an early-bird special that will only be available on the first day of the campaign, just saying.

But right now, let’s kickstart monster month with an episode about the wampus cat! The wampus cat, or just wampus, has appeared in folklore throughout North America for over a hundred years and probably much longer, especially in mountainous areas in the eastern portion of the continent.

The term actually comes from the word catawampus, probably related to the phrase catty corner. Both words mean “something that’s askew or turned diagonally,” but catawampus was also once used in the southeastern United States to describe any strange creature lurking in the forest. It was a short step from catawampus to wampus cat, possibly also influenced by the word catamount, used for the cougar and other large cats native to North America.

Whatever the origins of the word, the wampus cat was usually considered to be a real animal. Some people probably used the term as a synonym for catamount, but many people firmly believed the wampus was a different animal from the cougar, bobcat, or lynx. It was usually supposed to be a type of big cat, although not necessarily.

The word wampus also once referred to a dress-like garment resembling a knee-length smock worn over leggings, also called a wampus coat. The first newspaper use of wampus referring to an animal doesn’t appear until the very end of the 19th century. A Missouri paper wrote in May 1899:

They knew immediately the source of the hair-raising scream. The “wampus” was after them. They could see it; it was a big black thing with long hair and large feet.

What may be a follow-up to that story, from a different Missouri newspaper, appeared in November 1899 and was headlined “THE WAMPUS IS DEAD.”

Many described it as gray wolf, but others refused to believe such an animal was here and lightly spoke of the wampus. It frequented the dark woods at day time, coming forth at night and roaming around, uttering a strange cry. Woe unto the traveler overtaken by darkness, for the night was made hideous by the shrill cry. […]

On last Sunday night George Jolliff secreted himself in a tree south of his house and about 7 o’clock saw the long-sought monster, accompanied by several dogs, approaching; on seeing his dog, which was tied beneath the tree, they come under the tree and Mr. Jolliff fired, severely wounding the animal. Hastily climbing down, he fired again and this stopped the monster in his tracks. […]

It measured 6 feet 7 inches in length and 2 feet 4 inches in height; some say it is a female wolf, others a cross between the dog and wolf species. It is dark brown tinged with red and black.

This sounds like a coyote or red wolf, especially considering that it was accompanied by dogs. The size of the animal in metric is 2 meters long, presumably including the tail, and 73 cm tall. The height is accurate for a coyote or red wolf but is much longer than even a gray wolf. It’s possible the animal had an unusually long tail or there was a little exaggeration going on. Whatever the animal was, dogs, coyotes, and wolves don’t make a screaming sound, so this wasn’t the same animal that kept frightening people with its shrill cries.

By the beginning of the 1900s, the wampus as an animal had completely overtaken the use of the word as an article of clothing. The first baseball team named the Wampus Cats, from Texas, appears in 1908, which argues that the term wampus cat had been in common use for some time. The surge of articles about the wampus also suggests the term had made its way from local use into the popular culture. By the 1910s, any unidentified animal is referred to as a wampus, from a striped rodent-like animal to an exhibit in a traveling menagerie, which unfortunately wasn’t described. Humorous articles claiming to answer the question of “what is the wampus?” appear alongside humorous poetry about the wampus. Well, it supposed to be humorous but it’s not actually funny. More sports teams named the Wampus Cats also appear in the 1910s, along with a cheer squad in Oklahoma called the Wampus Kittens—although interestingly, the Wampus Kittens were cheering the Wildcats.

By the 1920s, newspaper reports of the wampus cat were routine. Its description varies and most reports are light on definite details. Here are some examples of descriptions.

November 1897 (near Clarksville, Tennessee): “Mr. Gaisser was within ten feet of the strange animal and describes it as being about six feet in length [that’s 1.8 meters], of a ferocious appearance, having long claws and looking as though it could attack and dispatch a man as easily as a hog. […] What kind of an animal it is Mr. Gaisser cannot say. It has the appearance of being either a jaguar, mountain lion or a catamount.”

November 1918 (near Vestal, Tennessee, a community in south Knoxville): “It looked very much like a leopard. It was a short haired animal, with a slick, glossy coat. It was white and gray spotted, and had a long tail, with a bushy end.”

December 1921 (in Howell County, Missouri): “Drake says it was a long lanky animal, had spots on it. Then Bill Webb saw the ‘wampus cat.’ It was in the day time. Bill says it was running and disappeared in a second. It was built like a tiger and light yellow in color, he reports.”

January 1926 (near the Spring Creek community of Crenshaw County, Alabama): “The animal has been seen by a number of people, and apparently either is a panther or a monster wildcat from the recesses of Patsalega swamp. The beast is described as being of the size of a large shepherd dog, dark of hue and shaggy of coat. It steps from eighteen to twenty inches while walking, and when running it covers the ground in huge leaps of from six to ten feet. It has long claws, and leaves a footprint measuring two and one-half inches in width.” That’s about 6.5 centimeters, which is not a very big pawprint for a big cat; a cougar’s print would be up to four inches across, or 10 centimeters.

By the 1940s, newspaper mentions of the wampus as an animal diminish, taken over by sports teams with the name. By the 1960s wampus cat articles are mostly space-filling pieces talking about traditions among local oldtimers, usually with a humorous tone although again, they’re not actually funny, and fewer sports teams carry the name. By the 2000s, when reporters were doing their research online, any mention of a wampus cat is accompanied by the bogus Cherokee story about a woman who could turn into a wildcat, and usually also claim that “wampus” is a Cherokee word.

Even though the term wampus fell out of favor slowly after its peak in the late 1920s, reports of cat-like animals were still appearing in newspapers. They just didn’t get called wampus cats. A search for “strange animals” on Newspapers.com will bring up dozens of reports. Here are a few from the 1950s and 60s.

January 1951 (Pennsylvania): “Sent to hunt a strange animal reportedly sighted in the Noxen-Harveys Lake area, three bloodhounds today were themselves the objects of an extensive search in that region. Meanwhile, other reports of ‘strange’ animals came from the Hazleton area. The three bloodhounds…began trailing the animal, variously described as a bobcat, lynx, or mountain lion….”

February 1955 (South Carolina): “A resident…reported today he had seen the animal yesterday and described it as being black and having long hair and a long bushy tail. Mr. Findley said he heard weird sounds about 10 o’clock last night and went out with a light and gun, but neither saw nor heard anything more. He said the sounds were similar to a huge cat.”

July 1962 (Cherrytree Township, Pennsylvania): “According to Mr. Black, the large animal jumped from the limb of an oak tree on his farm and fled into the cover of a nearby game preserve. […] He pointed out the marks on the ground where the animal landed and inspected claw marks on the tree. […] Asked to compare its size with that of a large dog, the farmer said it was considerably larger and tawney coated.”

February 1963 (near Roan Mountain in the Cherokee National Forest, south of Elizabethton, Tennessee): “It has a track larger than a big dog, and is black in color. A real shiny black. Most of the dogs refuse to track or bay this strange animal and those with nerve enough to get close to the animal wish they hadn’t. Mr. Birchfield had one dog that was real brave and ventured close, but the poor dog was carried home by Birchfield with broken bones.”

September 1965 (Fairview, North Carolina): “The ‘animal,’ described as dark in [color], resembling a cat but much larger, was first seen when the Thomasville-Lexington reservoir was under construction in the late 1950’s. […] It has been reported that the cries sound ‘like cats fighting, then ending with the sound of a bob-white bird.’”

I only stop in 1965 because otherwise this episode would be about two hours long and very repetitive.

Reports still occur today, posted online. In a May 2018 comment on an article about wampus cats, someone named Greg Brashear writes “I saw what the old farmers in my area in north central Ky. [Kentucky] call a ‘wompus cat’. […] It was bigger than a bobcat but smaller than a cougar with yellow eyes and a [disproportionately] long tail and it was solid black.”

The cougar (also called a mountain lion, puma, painter, catamount, or panther) was once common throughout most of the Americas but was hunted to extinction in much of the eastern United States around the early to mid-20th century. It’s a big animal, able to kill deer, with a big male weighing as much as 100 kg [220 lb]. It can leap enormous distances—up to 40 feet while running, or 12 meters, up to 18 feet straight up into a tree, or 5 1/2 meters—and can sprint up to 50 mph, or 80 km/hour. It doesn’t roar but instead produces an unearthly scream. It can also purr.

This is what a cougar sounds like:

[cougar scream]

There’s no doubt that at least some wampus cat reports were cougars. Cougar sightings have continued in the eastern United States and Canada through the present day. Young male cougars travel widely to establish a territory, so most modern sightings in the southeast are probably of young males who have traveled from populations in the west. There’s evidence that many more cougars have started moving into the northeastern United States and Canada and may have even established breeding populations.

The cougar varies in color from tawny to reddish and is occasionally greyish-white. Occasionally a leucistic individual (meaning white or partially white) is caught on camera traps, but there has never been a confirmed sighting of a melanistic cougar (meaning black). It’s likely that sightings of wampus cats described as yellow or gray and white are actually cougar sightings.

Another North American cat, the jaguar, is sometimes black in color. Jaguars are fairly common in South America but much less common in Central and North America. North American jaguars are also much smaller than South American populations, only about half the size of a cougar. The jaguar strongly resembles the leopard, with rosette-like black spots on a tawny or yellowish background. Melanistic jaguars are usually called black panthers and are rare in the North American population.

By 1960 the jaguar was almost completely extirpated in the United States (that means driven to extinction in a particular area), but a population remains in northern Mexico and occasionally one roams across the border into Arizona, Texas, or New Mexico. It prefers heavily forested areas near water.

It’s possible, though very unlikely, that a young male black panther could roam as far as the eastern United States and contribute to wampus cat sightings. On the other hand, the jaguar doesn’t fit wampus cat descriptions very well either. The jaguar roars instead of screaming like the cougar, and its smaller stature and extreme shyness make it unlikely to venture close to humans.

This is what a jaguar sounds like:

[jaguar sounds]

There is a third possibility, assuming the wampus cat isn’t an animal new to science. The jaguarundi is also native to the Americas, including most of South and Central America through northern Mexico. It’s related to the cougar and is solid colored, without spots, with a coat that can be black, gray-brown, or reddish. It’s only about twice the size of a domestic cat but looks much different.

The jaguarundi’s body is long and its legs are relatively short in proportion, which means it has a somewhat otter-like gait when it runs. Its rounded face has small round ears, also resembling an otter. Its tail is long, thick, and bushy. It lives in forests, rainforests, open areas (as long as there’s brush to hide in), deserts, and mountains across a wide range, but it’s not very well studied.

The jaguarundi used to be found in the United States, although its former range is unclear. Confirmed and/or credible sightings have been reported in Texas, Arizona, Alabama, and especially Florida, including roadkill animals. It mostly eats small animals like rodents, rabbits, birds, lizards, and fish. It’s mostly nocturnal but is somewhat active during the day as well. It has at least 13 different calls, including whistles, growls, screams, and chattering and chirping.

This is what a jaguarundi sounds like. I apologize for the music in the background; there’s not a lot of jaguarundi calls to choose from online and I had to grab this audio from a National Geographic video. There’s a link in the show notes to the original if you’d like to watch the whole thing:

[jaguarundi sound]

It’s interesting to compare the jaguarundi’s variety of calls to some of the wampus cat sightings. While the jaguarundi isn’t a large animal and can’t kill pigs and dogs, as is frequently reported for the wampus cat, it’s a vocal animal and can and does kill domestic poultry. Brashear’s 2018 comment about a black cat with a disproportionately long tail sounds like a potential jaguarundi, although he described it as bigger than a bobcat when the bobcat is typically larger (although not as long, especially if you include the tail). The 1965 report of a dark-colored cat whose screams ended with a bird-like call also sounds like the jaguarundi. The bobwhite referred to in that sighting makes a two-tone whistle that sounds like this:

[bobwhite call]

It’s exciting to think that many wampus cat sightings might be of the jaguarundi, especially since sightings continue to the present day. Fortunately, the jaguarundi is a protected species in the United States and throughout most of its range. It would be great if these interesting wild cats were found to have established breeding populations in the less populated areas of North America.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or Podchaser, or just tell a friend.

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Episode 145: The Cheetah

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This week is another suggestion from Wyatt, all about the cheetah!

The cheetah moves fast and can zigzag at the same time:

Baby cheetahs have silvery manes on their backs:

Cheetahs and dogs get along well in captivity:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’re talking about cheetahs! This is a suggestion from Wyatt, and it’s also an animal I’ve had on my list to cover for a long time.

You may think the cheetah is just another big cat, but it’s different from other felids in some interesting ways. It’s most closely related to the puma, also called the cougar, and to the jaguarundi, both of which live in the Americas, but the Cheetah mostly lives in Africa. It was once also common throughout parts of Asia, but there are probably fewer than 50 Asiatic cheetahs left alive in the wild today.

The cheetah’s genetic profile shows a bottleneck that occurred about 12,000 years ago. That means the worldwide population of cheetahs dropped so low that it became inbred, which lowered its genetic variability. This is about the same time that a lot of animals went extinct at the end of the Pleistocene, so we’re very lucky the cheetah survived. Since it migrated into Africa about 12,000 years ago, it’s possible that it only survived because it found the right combination of habitat and prey animal at just the right time. The cheetah’s genetic profile actually shows another bottleneck that happened around 100,000 years ago, which researchers think may have occurred as it migrated across Asia. Whatever caused these genetic bottlenecks, the result is that all cheetahs are genetically nearly identical.

Ordinarily, low genetic diversity means an animal is vulnerable to disease and infection due to a weak immune system. But cheetahs hardly ever get sick in the wild. A long-term study of cheetahs on protected land in Namibia found that zero of the 300 cheetahs showed symptoms of infection or disease. The team studying the cheetahs captured some of the cheetahs long enough to perform immunological tests on them—which didn’t hurt them—and compared the results with those of leopards also living in the region. They found that while the leopards had a stronger overall immune system, the cheetahs had a much stronger initial immune response.

The cheetah is tan or yellowish with a white belly and throat. It has black spots over most of its body, and partial or complete rings at the end of its long tail. It has black streaks on its face called tear streaks since they start at the inner corner of the eyes and trace down the sides of the nose and over the cheeks. No other felid has tear streaks, and some researchers think it may help the cheetah see better in bright sunlight.

The cheetah has a small head, long legs, and a long tail and stands about three feet tall, or 90 cm. Its tail is almost as long as it is tall. It’s lightly built. In fact, you might say it’s built for speed.

Because, of course, the cheetah is the fastest land animal alive. The fastest cheetah ever reliably clocked ran at 70 mph, or 112 km/hour. That’s as fast as a car racing down the interstate. Of course, the cheetah can’t keep up that pace for very long, but it can run at around 40 mph, or 64 km/hour, for longer. It has the real-life equivalent of a turbo button in some video games. If it’s chasing an antelope, which is mostly what it eats, and it’s close but not gaining, it hits that turbo speed and zoom! It accelerates long enough to catch the antelope. And it only needs about two seconds to reach its maximum speed. Not only that, it can run that fast while twisting and turning through brush, since antelopes also switch direction frequently to try to outmaneuver the cheetah.

Wyatt specifically wants to know how cheetahs run, and it’s definitely worth going into. The cheetah is incredibly well-adapted for high-speed hunting. It looks more like a greyhound than a big cat, with a deep chest and long slender limbs. The deep chest allows room for the cheetah’s oversized heart and lungs. It also has large nasal passages so it can get plenty of oxygen with every breath. Its long tail acts as a rudder, helping it turn quickly without slowing down. The cheetah also can’t retract its claws all the way like most felids. It can extend the claws somewhat, but they’re always partially extended. This means the cheetah has better traction, since the claws bite into the ground as it runs.

But there are other adaptations that aren’t so obvious. Its leg bones are arranged so that they’re more stable, reducing the risk of a cheetah putting a foot down wrong and wrecking. The cheetah’s spine is long and flexible, and it actually stretches as much as 30 inches, or 76 cm, while the animal is running, to give it an even longer stride.

Its inner ear is also unique. The inner ear is what allows a mammal to balance and move without getting disoriented or falling over. The inner ear consists of three tiny canals filled with fluid and sensory hair cells. The canals are oriented in different directions, so when you move your head around, the liquid in the canals moves too, and the sensory cells tell the brain which direction the liquid is moving, and the brain puts it all together and then you know exactly where you head is in comparison to the ground. And the best thing of all is, you don’t actually have to think about it, your brain just does it automatically. That’s good, because it sounds really complicated.

But the canals in the cheetah’s inner ear are different from those of all other felids. They’re bigger and longer, which allows the cheetah’s brain to fine-tune exactly where its head is even when it’s moving so fast that if it was a car, it would be pulled over for speeding. This means that the cheetah can adjust the position of its head as it runs so that it can get a better view of its surroundings, called visual stability.

We know so much about how cheetahs run because cheetahs in captivity enjoy chasing an artificial lure. Think of it like a scary version of your pet cat chasing the red dot. This allows scientists to study how the cheetah moves while running, using high-speed cameras and equipment called force plates that measure pressure. In a study published in 2012, researchers compared cheetahs and greyhounds and discovered that even when the two animals run at the same speed, the cheetah keeps its feet on the ground slightly longer than the greyhound. Even though the difference is small, it’s enough to reduce overall stresses on the cheetah’s legs, which means it can run faster without risking an injury. Its toe beans, also called foot pads, are also large and tough, more like a dog’s than a cat’s.

In fact, a lot of the cheetah’s adaptations for running make it resemble a canid more than a felid. That’s a good example of convergent evolution, since dogs and other canids mostly hunt by pursuing their prey while many felids use ambush tactics instead. Because of its adaptations to running, the cheetah can’t climb very well. It’s also active during the day, called diurnal, unlike most felids which are nocturnal.

It’s a social animal too. Males often live together in small groups called coalitions, either brothers or unrelated males. Females are more solitary, but when a female doesn’t have cubs to take care of, she usually spends at least part of her time with other cheetahs.

The cheetah can’t roar, but it makes a lot of other noises. Last week we heard a clip of a chirping cheetah that sounded like a bird, but that’s not the only sound a cheetah makes. It can purr, meow, chirp, growl, yowl, and so forth. Here are some of the sounds cheetahs make. I’ll put more at the end of the episode.

[cheetah sounds]

Cheetah cubs have a mane of silvery-gray fur on the back, which might act as camouflage but which also makes the cubs look a lot like tiny honey badgers. If you remember episode 62, about the honey badger, you may remember why. But even so, lots of animals eat cheetah cubs. Researchers estimate that in some habitats, only about 4% of all cheetahs born actually live long enough to grow up.

The cheetah is fast, but larger, stronger predators live in the same areas where it lives. Lions, leopards, hyenas, and other animals will wait until a cheetah kills an antelope, then will try to take the kill from the cheetah. Habitat loss is also a major factor in the survival of the cheetah. And, of course, people hunt cheetahs, either as trophies or because they mistakenly believe cheetahs kill livestock. Studies have proven that cheetahs actually much prefer antelopes and other wild animals.

Young cheetahs are also sometimes captured to sell as exotic pets. This isn’t a good thing, since quite often the cheetahs aren’t properly cared for, but it has been going on for a very long time. The cheetah isn’t a very aggressive animal and becomes tames fairly easily. In Egypt, tame cheetahs were used to hunt game as far back as 1500 BCE, and probably earlier, although only royalty owned them.

Despite this, cheetahs don’t do very well in captivity. They need a lot of space to move around, and if they don’t have enough space, they suffer from stress-related illnesses. Even the best zoos have trouble taking care of cheetahs properly. The reason you see so many photos of cheetahs and dogs together is that zoos have discovered that dogs make good companions for cheetahs, helping them stay calm. Cheetahs rarely breed in captivity.

So, while we’re talking about really fast animals, what’s the fastest living animal known? The cheetah is the fastest land animal, but the fastest flying animal is the peregrine falcon, which can dive at a recorded speed of 242 mph, or 389 km/hour. For regular flying, the white-throated needletail swift can fly at 105 mph, or 169 km/h, while the Brazilian free-tailed bat has been clocked at more than 99 mph, or 160 km/hour. The fastest swimming animal known is the black marlin, which can swim at 82 mph, or 132 km/h. But, of course, we haven’t measured every living animal to see how fast they can all run, swim, or fly. We didn’t even know about the Brazilian free-tailed bat’s speed until a study a few years ago. The researchers didn’t believe their data at first. But it seems pretty clear that the cheetah doesn’t have a whole lot of competition in the fastest land animal race.

[more cheetah sounds]

You can find Strange Animals Podcast online at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon if you’d like to support us that way.

Thanks for listening!

Episode 120: Hybrid Animals

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If you’re a subscriber on Patreon, you may recognize some of the information in this episode, but I’ve updated it and added a whole bunch. Thanks to Pranav for the topic suggestion!

A cama, llama/camel hybrid:

A swoose, swan/goose hybrid:

Motty the Asian/African elephant hybrid and his mother:

A zorse, zebra/horse hybrid:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’ve got another listener suggestion. Pranav really really wants me to do an episode about hybrid animals, but I’ve been dragging my feet on it because I actually already did an episode on the topic back in 2017—but only for Patreon subscribers. It wasn’t my best episode so for various reasons I’d decided not to unlock it. But Pranav really really wants to learn about hybrids! So I’ve taken part of the Patreon episode and added a lot of newer information to it to bring it up to date and make it more interesting.

The term for an animal with parents of different species is hybrid. Crossbreed is also a common term, although technically a crossbred animal is one with parents of the same species but different breeds, like a labradoodle is a crossbreed of a Labrador and a poodle. Both parents are domestic dogs.

A mule, on the other hand, is a hybrid between a horse and a donkey, specifically a mare and a jack, which is what a male donkey is called. The offspring of a stallion and a lady donkey, known as a jenny, is a hinny.

So why can a horse and a donkey breed while, for instance, a possum and a rat can’t? The two species must belong to the same family, and with very few exceptions, they must also belong to the same genus. The genus is indicated in an animal’s scientific name. Equus caballus is a horse and Equus africanus is a donkey, while a Labrador and a poodle are both Canis familiaris, or Canis lupus familiaris depending on who you ask. The Virginia opossum is Didelphis virginiana while the brown rat is Rattus norvegicus. They’re not even slightly related, although superficially they look alike.

If the hybrid’s parents are from species with different numbers of chromosomes, hybrid males will almost always be sterile. You can’t cross two mules to get more mules, for instance, because male mules can’t make babies. Female mules are sometimes fertile but very rarely conceive. Horses have 64 chromosomes while donkeys have 62. Mules end up with 63. Hinnies are much rarer than mules because if the female of a pair of related species has fewer pairs of chromosomes than the male, it’s less likely that any offspring will result.

More closely related species can have fertile offspring. Killer bees, for instance, are hybrids of a European honeybee and an African honeybee. The two are actually subspecies of the honeybee, Apis mellifera, so it’s less like creating a hybrid and more like crossing a Labrador and a poodle to get an adorable happy pup with curly hair. It seemed like a really good idea. The result was supposed to be a tropical bee that would produce more honey. What actually happened was killer bees. Which do actually kill people. Hundreds of people, in fact, since they escaped into the wild in 1957 and started spreading throughout the Americas.

When animals hybridize even though they aren’t of the same genus, it’s called an intergeneric hybrid. That’s the case with sheep and goats. While sheep and goats are related on the subfamily level, they belong to separate genuses. Sheep have 54 chromosomes while goats have 60. That’s enough of a difference that most hybrid babies don’t survive long enough to be born alive, but it does happen occasionally. Usually the babies have 57 chromosomes, and sometimes the babies survive and even prove to be fertile when crossed with either a goat or a sheep. So that’s weird.

Just because someone wants to find out what you get when you cross, say, a sheep and a goat, doesn’t mean the sheep and goat in question are willing to make that effort. The less closely related the two animals are, the less interested they are in mating. Occasionally hybrids are produced by artificial insemination, or rarely by genetic manipulation of embryos, although genetic manipulation technically results in a chimera, not a hybrid.

Another intergeneric hybrid is a cross between a male camel and a female llama. In this case it’s accomplished by artificial insemination and has only produced a handful of living babies, called camas. Researchers were hoping to produce a camel-sized animal with a llama’s more cooperative temperament, but camas turn out to act like camels. So basically they’re just camels that aren’t as big or strong as camels.

In the 1970s, Chester Zoo in Cheshire in the UK kept a female Asian elephant and a male African elephant together in the same enclosure. The pair mated but no one thought they could produce a hybrid calf, since Asian elephants and African elephants aren’t that closely related. They’re another pair of animals that don’t share a genus. But a calf named Mottie was born in 1978. Surprise!

Many hybrids resemble one or the other of their parents. Motty was a fascinating blend of both. He had five toenails on his forefeet and four on the hind feet like his mom. African savannah elephants like his dad have four front toenails and three hind toenails. But he had longer legs and bigger ears than an Asian elephant. His trunk was wrinkled like his dad’s, but had only one digit at the tip like his mom’s. African elephants have two digits at the tip of their trunks. Even the shape of Motty’s head and back were a mixture of his parents’ characteristics.

So why would anyone want to cross species to get a hybrid? I mean, you might end up with killer bees.

A lot of times hybrids show what is known as hybrid vigor. This is more common in hybrid plants, but some hybrid animals combine the best features of their parents. Mules, for instance, have more stamina than horses and are stronger than donkeys. A hybrid of a domestic cow and an American bison is called a beefalo, which is bred to produce leaner meat in an animal that is better for the environment than a cow but easier to handle than a bison. But a lot of times, hybrids are the result of human ignorance, such as keeping related animals together without realizing babies might result, or human curiosity. We just want to see what might happen.

Unfortunately, for every healthy mule-like hybrid, there’s an unhealthy, malformed, or stillborn animal from parents who should have never produced offspring. Motty the elephant was premature and died of infection when he was only eleven days old, probably because his immune system was weakened due to his hybridized genetics.

Lions, tigers, leopards, and other big cats can all interbreed, but the resulting babies sometimes have unusual health issues. When a male lion and a female tiger breed, the resulting babies are known as ligers, and ligers are enormous. They’re much bigger and heavier than both their parents. This sounds neat, but it happens because of a genetic anomaly that means the animals just grow and grow much faster and longer than a normal tiger or lion cub. This puts stress on the body and can lead to health problems. Ligers can sometimes weigh over 1200 pounds, or over 550 kg, and grow up to 12 feet long, or 3.6 meters, bigger than a full-grown tiger or lion. The offspring of a puma and a leopard, often called a pumapard, has the opposite problem, with cubs usually inheriting a form of dwarfism. The cubs are only half the size of the parents.

The savannah cat is now accepted as a domestic cat breed by some organizations, but it was first developed in 1986 by crossing a female domestic cat and a male serval. The serval is a wild cat from Africa with large ears, long legs, and a spotted and striped coat pattern. It’s a little larger than a domestic cat and is sometimes kept as an exotic pet, although it’s not domesticated. The hybrid babies inherited their mother’s domesticated nature and turned out to be mostly sociable with humans, although some are less tame. But while Savannah cats are pretty, the kittens of a serval and domestic cat are often stillborn or premature, and many male offspring are infertile. Savannah cats are also prone to certain health issues, especially heart problems. Some areas have banned savannah cats since they’re not considered fully domesticated.

The more closely related the parents, the more likely a hybrid baby will result, and the more likely it will be healthy. Many wolf-like canids can and do easily hybridize with other wolf-like canids, since they have 78 chromosomes in the same arrangement and are closely related. Offspring are usually fertile. The wolf-like canids include wolves, domestic dogs, coyotes, jackals, and dholes. Where the ranges of these various species overlap in the wild, hybrids are not uncommon. But canids that are less closely related to the wolf-like canids, like foxes and raccoon dogs, can’t and don’t hybridize with their cousins.

Some whales will hybridize in the wild, including the fin whale and the blue whale, which are closely related. Dolphins of different species sometimes hybridize when they’re kept together in captivity, such as the false killer whale and the bottlenose dolphin. The resulting babies don’t usually live very long. Occasionally dolphins also hybridize in the wild too. In 2017 a hybrid baby of a rough-toothed dolphin and a melon-headed whale, which is actually a species of dolphin, was spotted off the coast of Hawaii. Researchers were able to get a small tissue sample from the young hybrid to DNA test, which confirmed its parentage. The melon-headed whale mother was also spotted with her calf in a pod of rough-toothed dolphins.

Birds also sometimes hybridize in the wild. This happens occasionally where the range of two closely related species overlap. Since the resulting babies may look very different from both their parents, this makes bird-watching even more challenging. Some warbler species hybridize so often that the hybrid offspring are well-known to birders, such as Brewster’s warbler and Lawrence’s warbler. These two birds are both offspring of a golden-winged warbler and a blue-winged warbler mate, with the appearance different depending on which traits the babies inherit from which parent.

Occasionally a domestic chicken will mate with a wild pheasant and produce babies, since chickens and pheasants are related. Very rarely, a swan and goose will mate and produce babies, although the babies don’t usually survive very long. One swan-goose hybrid that did survive was hatched in 2004 in Dorset in the UK, with a mute swan mother and a domestic goose father. The baby was referred to as a swoose and it was the only of the offspring to survive. It looks like a goose but with a longer, more swan-like neck and head.

If you’ve listened to episode 25, part one of the humans episode, you’ll recall that human DNA contains traces of DNA from our extinct cousins, including Neandertals. If Neandertals were still around, we could undoubtedly produce hybrids with them. But what about our living cousins, the other great apes? Humans are closely related to chimpanzees, but could a human produce a hybrid with a chimp? It’s possible but very unlikely. We belong to different genuses and have different numbers of chromosomes, not to mention the enormous ethical issues involved.

Let’s finish up with my favorite hybrid animal, the zebroid. This is a term for any hybrid where one parent is a zebra and the other parent is a horse, a donkey, or a pony, which also leads to the terms zorse, zedonk, and zony. These all crack me up, especially zedonk.

Zebroids are usually at least partially striped, frequently on the legs and neck but sometimes all over. The mane may stand up like a zebra’s or fall over the neck like a horse’s. The zebroid is adorable because of the stripes, but it’s also ornery and can be aggressive. There goes my dream of having a stripy horse.

You can find Strange Animals Podcast online at strangeanimalspodcast.com. We’re on Twitter at strangebeasties and have a facebook page at facebook.com/strangeanimalspodcast. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon if you’d like to support us that way.

Thanks for listening!

Episode 109: Convergent Evolution

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I mention convergent evolution occasionally, but what is it really? This week we learn about what it is and some animals that demonstrate it. Thanks to Richard E. and Llewelly for their suggestions this week! Jaguars and leopards look so similar I’m not 100% sure this picture actually shows one of each:

The adorable sucker-footed bat from Madagascar:

The equally adorable TOTALLY UNRELATED disk-winged bat from South America:

Metriorhynchus looked a lot like a whale even though it was a crocodile ancestor:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’re going to learn about some animals that represent convergent evolution. That’s a term that I mention every so often, so it’s time to really dig into it and see what it’s all about. We’ll start with animals that are fairly closely related, then work our way backwards to those that aren’t related at all.

Basically, when unrelated organisms develop similar form, structure, or functions as each other, that’s called convergent evolution. One simple example is bats and birds. They’re not related, but both can fly using forelimbs that have been modified into wings.

This topic idea was sparked by an idea from Richard E., who suggested an episode about evolution and how it doesn’t “improve” anything, just adapts. That’s an important distinction. Evolution is a reactive force, not a proactive. Sometimes we use terms like advanced to describe certain animals, and primitive to describe others with traits that haven’t changed in a long time. That implies that some animals are “better” than others, or better adapted. In actuality, one trait is not better or worse than another, as long as both traits help the animal survive and thrive. If an animal has traits that haven’t changed in millions of years but it’s still doing well, it’s as adapted as it needs to be. An animal that’s extremely specialized to an environment can sometimes be much more vulnerable to environmental change than a more generalized animal, too.

From a scientific point of view, while it may look like species become more advanced as time goes on, all it means is that a lot of animals have evolved to occupy specific ecological niches. One example Richard gives is the panda, which we talked about in episode 42 about strange bears.

The panda is an extremely specialized animal. It’s a bear that is no longer a carnivore, for one thing, and not only does it not eat meat, or hardly any meat since it will eat small animals and bird eggs when it finds them, it mostly just eats one type of plant. That plant, of course, is bamboo, which is low in nutrients. The panda has adapted in all sorts of ways to be able to digest bamboo, and one of the most obvious adaptations is what looks like a sixth toe on its forefeet. It’s not a toe but a projecting sesamoid bone that acts as a toe and helps the panda grasp bamboo.

But the panda’s sixth toe evolved because of selective pressures, because pandas born with the toe were able to eat more bamboo and were therefore healthier and more likely to have babies than pandas without the toe.

Richard also mentioned the similarities between jaguars and leopards. They are related, but not closely. The jaguar is more closely related to the leopard than to the lion, but the leopard is more closely related to the lion than to the jaguar. That’s not confusing at all. But both cats look very similar, tawny or golden in color with black spots called rosettes, and both frequently demonstrate an all-black coloring called melanism. But the jaguar lives in the Americas while the leopard lives in Asia and parts of Africa. Why do they look so similar?

In this case, a big part of the similarities between jaguars and leopards are that they share a common ancestor that lived around three and a half million years ago. The jaguar migrated from Africa into Europe and then into North America on the land bridge Beringia, while the leopard mostly stayed put but expanded its territory into Asia. New research into feline genetics suggests that the jaguar interbred with lions at some point, which gave it a heavier build and stronger jaws than the leopard.

But leopards and jaguars look very different from other big cats, and very similar to each other. This is where convergent evolution comes in. Leopards and jaguars live in similar habitats, dense forests and jungle where light is dim and filtered through leaves. A spotted animal is harder to see where there’s a lot of dappled shade, and an all-black animal is harder to see when there’s not a lot of light. Melanistic jaguars, those that are all-black, are extremely common, and melanistic leopards are more common in populations living in thicker forests than in populations that live in more open forests with more light.

Leopards and jaguars share a genus, Panthera, which means they’re pretty closely related. But Llewelly suggested we talk about sucker-footed and disk-winged bats, and while they’re both microbats, they’re much less closely related than jaguars and leopards. And they share a really weird adaptation for climbing on smooth leaves.

The sucker-footed bat lives in Madagascar, the big island off the coast of Africa that’s full of lemurs. Madagascar is also home to a tree called the traveler’s palm, although it’s not actually a palm tree. It’s an amazing tree with huge leaves that grow in a fan shape. I don’t mean the tree has a lot of leaves growing in fan shapes, I mean the main part of the tree is one giant fan of enormous leaves. The leaves can be 36 feet long, or 11 meters, and some trees can grow 100 feet high, or 30 meters. It’s supposedly called the traveler’s palm because the fan tends to grow along an east-west line so it gets the most sun, or possibly because the stems catch and hold rainwater that thirsty travelers could drink. Its white flowers are pollinated by ruffed lemurs and it has bright blue seeds. But the traveler’s palm also has extremely smooth leaves, and the sucker-footed bat roosts on the leaves. But the leaves are so slick and smooth that most insects can’t even hold on to them. How does a bat manage it?

As you may have guessed from the name, the sucker-footed bat has little cuplike pieces of skin on its thumb joint and its feet that excrete lots of sweat-like fluid. The bat presses the cups against the leaf and they act just like suction cups, although the main suction comes from wet adhesion. You know how a suction cup holds better if you lick it first? That’s pretty much how it works. Also, hey kids, don’t lick suction cups, they’re dirty. Also don’t drink rainwater out of leaves, that sounds clean but it’s full of dirt and drowned bugs.

The sucker-footed bat roosts head-up instead of hanging upside-down, only one of six species known to roost head-up. It’s about two inches long, or 5 cm, and eats insects. Because it mostly only roosts in the traveler’s palm and is mostly solitary, it doesn’t carry any parasites in its fur or on its skin. Parasites can’t walk across those slick leaves.

The disk-winged bat, meanwhile, lives in the tropical parts of Central and South America. Like the sucker-footed bat, it has cuplike discs made of skin and cartilage on its thumbs and feet that act as suction cups. It roosts head-up in smooth curled-up leaves, generally in small groups. But its suction cups are different from the sucker-footed bat’s. They actually use suction to stay in place, whereas the sucker-footed bat’s suction cups mostly just use wet adhesion from the sweat it produces, with the actual suction being weak and not really necessary.

So let’s back it up some more and look at two animals that have evolved in similar directions that aren’t related. Like crocodiles and whales, or at least a crocodile relative and modern dolphins.

Metriorhynchids [met-ree-oh-rink-id] were croc relatives that lived around 150 million years ago, about 100 million years before whales and their relatives evolved. Metriorhynchids were marine animals, and while we don’t know a whole lot about them since we don’t have very many fossils, we do know that they grew up to ten feet long, or three meters, and lived in the ocean.

Metriorhynchus ate fish, ammonites, and whatever else it could catch, and it was a fast swimmer. It was streamlined with a long snout, smooth skin instead of armored, and even had a finned tail sort of like a shark’s that probably provided its propulsion through the water. It had four long flippers to help it maneuver.

In other words, in a lot of ways it looked like a dolphin, because it was so well adapted to live in the same environment. Whales and their relations have streamlined shapes, smooth bodies to reduce drag in the water, fluked tails, and flippers. Even the shape of metriorhynchus’s snout mirrors the longer rostrums that some dolphins have evolved to help them catch prey.

Finally, let’s look at convergent evolution between two animals that look totally different, are totally unrelated, but which share one similar feature. If you guessed primates and parrots, you are correct!

Specifically, this is about how the brain manages higher-order processing. In other words, intelligence. Primates, including humans, have an enlarged section of the brain called the pontine nuclei that transfers information between the brain’s cortex and cerebellum, allowing primates to process information in a more sophisticated way than most other mammals studied. But parrots and a lot of other birds are also intelligent, and researchers have recently discovered how their brains do the same thing.

Instead of a big pontine nuclei, birds use a part of the brain called the medial spiriform nucleus that performs the same transfer of information from the cortex and the cerebellum. In intelligent birds like parrots, that part of the brain is very large, five times larger than it is in chickens. I’m sorry, chickens, you’re very pretty birds and taste delicious, but you’re not known for your high-level reasoning abilities.

So convergent evolution is more than just two animals that evolve to look or act similar because they live in the same environment. In fact, there’s so much to convergent evolution that there’s no way I can do more than brush along the surface of the topic in a single episode. It might be a fun topic to revisit now and then.

In the meantime, now you know a little bit about what convergent evolution is. Just remember that if you explain it to a parrot, it’s processing your information with a totally different part of its brain than you are. That’s pretty awesome.

You can find Strange Animals Podcast online at strangeanimalspodcast.com. We’re on Twitter at strangebeasties and have a facebook page at facebook.com/strangeanimalspodcast. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or whatever platform you listen on. We also have a Patreon if you’d like to support us that way.

Thanks for listening!

 

Episode 083: Lions, tigers, and other big cats…of mystery!

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I’ve been meaning to do a big cat episode for a while, thanks to listener Damian who suggested lions and tigers! But when I started my research, I immediately got distracted by all the reports of mysterious big cats. So here’s another mysteries episode!

Here are the links to some Patreon episodes that I’ve unlocked for anyone to listen to. Just click on the link and a page will open, and you can listen on the page. No need to log in.

Marsupial lions

Blue tigers and black lions

The Queensland tiger, which is not actually about any kind of actual tiger

A lion and cub. This picture made me die:

The Barbary lion, possibly extinct, possibly not:

Watch out! Tigers!

A king leopard with stripe-like markings instead of spots:

Further reading:

Hybrid and Mutant big cats

Peruvian mystery jaguar skulls studied

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we’re going to learn about some mystery big cats. We’ve touched on big cats before in various episodes, including the British Big Cats phenomenon in episode 52. We’re definitely going to see some more out of place animals this week, along with lots of information about big cats of various kinds. Thanks to Damian who requested an episode about lions and tigers ages ago.

I’ve also unlocked three Patreon episodes so that anyone can listen to them. They won’t show up in your feed, but there are links in the show notes and you can click through and listen on your browser without needing a patreon login. The first is about marsupial lions and the second is about blue tigers and other big cats with anomalous coat colors. The sound quality on the blue tigers episode is not that great, but it’s a long episode with lots of information about blue tigers, white tigers, black tigers, white lions, king cheetahs, and lots more. The third is about the Queensland tiger, an Australian animal that’s not a feline of any kind, but why not?

The term big cat refers to tigers, lions, leopards, snow leopards, and jaguars, but it can also include cheetahs and cougars depending on who you ask. Big cats have round pupils instead of slit pupils like domestic cats and other smaller cats.

Lions, tigers, leopards, and jaguars can all roar. Snow leopards, cheetahs, and cougars can’t. But snow leopards, cheetahs, and cougars can purr, while lions, tigers, leopards, and jaguars can’t. The ability to roar is due to special adaptations in the larynx, but these adaptations also mean big cats can’t purr. So basically a cat can either roar or purr but not both.

The word panther, incidentally, refers to any big cat and not to a specific type of animal. So a black panther, in addition to being an awesome movie, is any kind of big cat exhibiting melanism, which causes the animal’s fur to be black all over. Leopards and jaguars are most commonly referred to as black panthers. Lions, tigers, and cheetahs do not exhibit true melanism as far as researchers have found.

Let’s start with lions. Lions live only in Africa these days, but were once common throughout parts of southern Asia too and possibly even parts of southern Europe. The lion is most closely related to the leopard and jaguar, less closely related to the tiger and snow leopard, but it’s so closely related to all those big cats that it can interbreed with them in rare cases.

There are two species of lion, the African and the Asian. Until recently there were also several subspecies of African lions, including the American lion, which once lived throughout North and South America. It only went extinct around 11,000 years ago. The American lion is the largest subspecies of lion ever known, about a quarter larger than modern African lions. It probably stood almost four feet tall at the shoulder, or 1.2 meters. Cave paintings and pieces of skin preserved in caves indicate that its coat was reddish instead of golden. It lived in open grasslands like modern lions and even in cold areas. There are reports of a reddish, short-maned cat supposedly called a “jungle lion” sighted in South America, but I can’t find much information about it and it’s much more likely to be a jaguar or cougar than a relic population of American lions. But wouldn’t that be awesome if it was.

The Barbary lion was a subspecies of African lion that lived in northern Africa until it was hunted to extinction. The Barbary lion was the one that battled gladiators in ancient Rome and was hunted by pharaohs in ancient Egypt, a big lion with a dark mane. The last one was supposedly killed in 1922, but recent research indicates that they survived much longer—maybe as late as 1958 or later. The last recorded sighting was in 1956, but the forest where it was seen was destroyed two years later.

One zoo in Morocco claims that their lions are purebred Barbary lions, descended from royal lions kept in captivity for centuries. But since we don’t have a full genetic profile of the Barbary lion to start with, it’s hard to determine whether the royal lions are Barbary lions. So far a 2005 DNA test on five of the royal lions indicates they probably aren’t, but DNA testing has come a long way since then and new tests on the royal lions and on preserved Barbary lion skins will hopefully be done soon.

The Sumatran golden lion, also called the cigau [pronounced chee-gow] is a mystery lion that is supposed to be golden in color with no markings, a relatively short tail, and with a mane or ruff of fur that’s sometimes described as white. It’s only about the size of a small donkey or large goat, but stocky like a lion. The most recent sightings are from the 1960s, where one supposedly attacked and killed a man. Some researchers think it may be a subspecies of the nearly extinct Asiatic lion, but others say it’s more likely to be an animal of folklore. Then again, there are tigers on Sumatra and it’s always possible it’s an anomalous coated tiger with no stripes, or stripes that are almost the same color as its coat. Tigers do have a white ruff around the face.

Lions are well known to live on the savanna despite the term king of the jungle, but they do occasionally live in open forests and sometimes in actual jungles. In 2012 a lioness was spotted in a protected rainforest in Ethiopia, and locals say the lions pass through the reserve every year during the dry season. That rainforest is also one of the few places left in the world where wild coffee plants grow. So, you know, extra reason to keep it as safe as possible.

Let’s talk about tigers next. Tigers are awesome animals, with the Bengal tiger being the biggest big cat alive today—on average even bigger than the lion. Tigers are good swimmers and most really like the water, unlike most cats. They live throughout Asia but once were much more common and widespread. I’ve found a lot of mystery tiger reports, but if you’re interested in tigers of unusual colors, I really do recommend you go listen to the unlocked Patreon episode about blue tigers.

The so-called beast of Neamt is a modern mystery from Romania. In spring of 2016, farmers started finding livestock killed during the night, but not eaten. The predator was clearly extremely strong, much stronger and larger than a dog. Its method of killing didn’t suggest a bear, which locals were familiar with anyway.

Some of the sightings seem normal, of a catlike animal the size of a calf. Other sightings were more bizarre. Some people reporting seeing a huge animal running on two legs, one guy said he’d wounded it with an axe but it didn’t bleed, and of course there were the predictable reports that animals it killed were drained of blood.

But in this case, DNA testing solved the mystery of what was killing the animals. The beast was injured by a barbed-wire fence, and a test of its blood indicated it was a Siberian tiger. The Siberian tiger is also called the Amur tiger, which we talked about in episode 44, Extinct and Back from the Brink. But there are probably no more than 500 Siberian tigers alive in the wild, and none of them live within 3,000 miles of Romania, or 5,000 km. So while we know what the beast of Neamt is, we don’t know how it got there. Out of place tigers, hurrah!

Another mystery tiger is from Chad in Africa. This one is sometimes called the mountain tiger, and it’s supposed to be the size of a lion but with reddish fur, white stripes, no tail, and huge fangs.

This doesn’t sound like anything alive today—but it does sound like an extinct cat called Machairodus. It was the size of a lion, or over 3 feet tall at the shoulder, or 1 meter, and around 6 ½ feet long, or 2 meters. It was a type of saber-toothed cat like Smilodon, although it wasn’t closely related to Smilodon and its fangs weren’t as big. It probably had a short tail. But Machairodus and its relatives died out probably a million years ago, although it might have persisted to only 130,000 years ago. That’s still a lot of years, so it’s not too likely that a population of its descendants still lives in Chad. For one thing, northern Chad is part of the Sahara, while southern Chad is a savanna. It’s not dense jungle or remote mountains.

But there are similar reports of the mountain tiger in other parts of Africa, where there are steep mountain ranges that aren’t well explored. And, oddly enough, similar reports also come from South America and even from Mexico. Machairodus did live in Africa, Eurasia, and North America, although its fossils haven’t been found in South America. Maybe the reports aren’t of a living animal but were inspired by fossil remains. Hunters who stumbled across fossil machairodus bones would recognize them as similar to tiger or lion skeletons, but wouldn’t know that the living animal was long gone.

Another South American big cat report comes from Ecuador. It’s called the rainbow tiger or rainbow jaguar, and it sounds really pretty. In the Macas region in southeastern Ecuador, in the Amazon jungle, locals have a story about a big cat properly called Tshenkutshen. The cat is the size of a jaguar, or up to six feet long not counting the tail, or 1.85 meters, but instead of having a pattern of dark rosettes on a tawny background coat, the rainbow tiger is black with stripes on its chest. The stripes are different colors: white, red, yellow, and black, which gives it the rainbow name. One report I saw says it’s white with black spots in addition to the stripes on its chest. It lives in the trees in remote areas, is rare, and at least one report says it has a hump on its shoulders and monkey-like forepaws but with claws. One was supposedly shot and killed in 1959, but there are no pictures of the carcass and no one knows where it went, if it even existed in the first place.

Naturally, the rainbow tiger isn’t actually a tiger since tigers don’t live in South America. If it is a real animal and not a folktale, it’s probably a type of jaguar. But the whole monkey hands thing implies it’s probably more of a mythological creature than a flesh and blood one, because no feline of any kind has forepaws that resemble hands.

There’s an interesting addition to the rainbow tiger mystery. Dutch primatologist Dr. Marc van Roosmalen spotted a strange jaguar during an expedition through Brazil in the late 1990s. It was mostly black, but had a white pattern around its throat.

There are plenty of other South American big cat mysteries, including the yemish that we covered in episode 59 along with the onza, a mystery cat from Mexico and central America. But one especially interesting report is from Peru. Peter Hocking is a Peruvian ornithologist, or someone who studies birds, but he’s also interested in other animals. In 1996 he got his hands on two skulls that were similar to jaguar skulls but reportedly not from jaguars, but from strange striped big cats instead.

In 2010, zoologist Darren Naish asked for and finally received high-quality plaster replicas of the skulls so he could study them. His conclusion is that both skulls are actually from jaguars, but he points out that most big cat species do occasionally produce anomalously striped individuals. No one knows where the pelts of these two jaguars are, unfortunately. Hopefully they’ll turn up eventually, or another striped jaguar will be found and can be studied so we can learn if it’s just an individual with an anomalous coat pattern, or an actual subspecies of jaguar with stripes instead of spots.

I couldn’t find any mystery cheetah reports beyond one called the Tennessee red cheetah. That excited me because I live in Tennessee and I’d never heard of it before. The Tennessee red cheetah is supposed to resemble the cheetah, golden brown with black spots, but with a reddish dorsal stripe and tail. Some reports say it’s reddish-brown all over with black spots.

That’s it. That’s all the information I can find. I was so disappointed, but basically it sounds like a tall tale or maybe a sighting of a jaguar. That’s the problem with mystery big cat reports. There are so many reports of so many animals that don’t correspond to any known species or subspecies of big cat, with few concrete details. In the case of the Tennessee red cheetah, the only details I could find were vague stories about one being shot and skinned, but the skin was missing. No date, no place, no names, nothing.

You can’t treat a report like that with anything but skepticism, so let’s move on to another mystery big cat, the Zanzibar leopard. When I was making notes for this episode, I wrote “probably extinct, may be too depressing to use.” But there’s always a chance it’s not extinct.

The Zanzibar leopard lives on Zanzibar Island off of Tanzania. It’s not a big island, only around 50 miles long, or 85 km, and 20 miles wide, or 30 km. The Zanzibar leopard was probably separated from the mainland population of leopards when sea levels rose after the last ice age. It’s smaller than a mainland leopard, with smaller spots, but not much is known about it since it hasn’t been studied in the wild and it may be extinct now. Unfortunately, many people on the island believed that the leopards were witches’ familiars, and that they should be killed. In 1964 the islanders overthrew the government, but also unfortunately, the newly installed government persecuted people it decided were witches. This included a government-run campaign to kill all leopards on the island. By the mid-1990s, conservationists suspected the Zanzibar leopard was extinct.

But there is hope. Earlier this year an Animal Planet show caught footage on a camera trap of what appears to be a Zanzibar leopard. Hopefully there are still some of the leopards remaining, and if so, hopefully they can also be protected.

Speaking of Tanzania, let’s finish with a big cat that might very well be a real animal—or something even more mysterious. The nunda is supposed to be a huge gray cat with tabby stripes, reported in Tanzania. Its paw prints are supposed to resemble a leopard’s, but are as big as a lion’s.

In a 1927 article, a British administrator named William Hichens reported about his investigation into nunda attacks around the village of Lindi in Tanzania. The attacks occurred in 1922, and started with a night watchman who was found dead one morning. Clutched in the dead man’s hand was a tuft of gray fur that Hichens thought might have been torn from a lion’s mane. But lions were rare in that part of Tanzania, and two locals reported seeing a huge brindled cat attack the man during the night. A few nights after that, another watchman was also killed in the same way, including the tuft of hair clutched in one hand, and that was followed by more attacks in other villages over the next several weeks. The attacks stopped, but resumed in the 1930s. Some huge footprints and more of the gray fur were found by a British hunter who tried to track the animal.

So what might the nunda be? The description doesn’t sound like any known big cat. Cryptozoologist Bernard Heuvelmans suggested it might be a huge African golden cat with anomalous markings. The African golden cat is related to the caracal and the serval, both fairly small, long-legged cats. It has variable markings and coloring, from reddish to grey, from spotted to nearly plain. But it’s only about twice the size of a domestic cat. Its paws are large for its size, but it’s not anywhere near the size of a leopard, much less a lion.

Of course, it might be a larger subspecies of golden cat, or a totally different species. But there is another possibility, one that’s far creepier and darker than an unknown big cat.

According to a book called Wild Cats of the World by Mel and Fiona Sunquist, published in 2012, in the early 20th century a group of witch doctors in that part of Tanzania ran an extortion racket. They demanded money from people and threatened to turn into lions and kill them if they didn’t pay up. And they did kill people—over 100 of them, according to the book. The murders were committed by young men who dressed like lions, including wearing lion paws on their feet so they left lion paw prints.

That would explain the rash of murders in a localized area, and the fact that so many of the victims were found clutching gray fur. The fur was never tested and could have come from any animal and been planted on the victims.

Zoologist Karl Shuker suggests that if the deaths weren’t due to these lion-men, the mystery big cat might be a type of leopard with stripes instead of spots. Leopards with stripes due to genetic coat anomalies are extremely rare, but they aren’t unheard-of. They’re sometimes referred to as king leopards. I have a picture of one in the show notes. While leopards can cross-breed with tigers, tigers don’t live in Africa, so a striped leopard-tiger hybrid wouldn’t be hanging around in Tanzania, certainly not in the 1920s.

Whatever the cause, no one has reported a nunda sighting in about 80 years.

You can find Strange Animals Podcast online at strangeanimalspodcast.com. We’re on Twitter at strangebeasties and have a facebook page at facebook.com/strangeanimalspodcast. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on Apple Podcasts or whatever platform you listen on. We also have a Patreon if you’d like to support us that way.

Thanks for listening!