Category Archives: North America

Episode 357: When Scientists Ate Mammoth Meat

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This week we’re going to talk about stories of scientists, explorers, and other modern people eating meat from long-dead extinct animals. Did it ever really happen?

Check out the great new podcast Herbarium of the Bizarre! I highly recommend it even though they don’t eat any mammoth meat.

Further reading:

Was frozen mammoth or giant ground sloth served for dinner at The Explorers Club?

Study Proves the Explorers Club Didn’t Really Eat Mammoth at 1950s New York Dinner

Company Serves World’s First ‘Mammoth’ Meatball, but Nobody Is Allowed to Eat It

Don’t eat me bro:

Blue Babe, a steppe bison mummy found in Alaska:

Show transcript:

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

We’ve talked about mammoths and other ice age megafauna plenty of times before, but this week we’re going to learn something specific and really weird about these animals, although it’s more accurate to say we’re going to learn how weird humans are.

You may have heard this story before, or something similar to this story. A group of scientists in Siberia or Alaska have unearthed a mammoth carcass that’s been frozen in permafrost for at least 25,000 years. It’s in such good shape that the meat looks as fresh as a fancy restaurant steak that’s ready to go on the grill. At the end of a long day of using pickaxes to dig the mammoth out of ground frozen as solid as rock, the scientists are so hungry that when someone suggests they actually grill some mammoth meat, they all think it’s a good idea. The meat turns out to taste as good as it looks. Everyone has a big steak dinner, even the camp dogs, and when the expedition ends they not only have a mammoth to put on display in their museum, they have a great story to tell about a meal no human has eaten for thousands of years.

You may even have come across an event that inspired this particular story. The incredibly well preserved 44,000 year old Berezovsky mammoth was discovered in Russia in 1900 and excavated in 1901, and it’s now on display in the Zoological Museum in Saint Petersburg. Rumors persisted for years that the expedition members ate some of the mammoth meat, but while we don’t know exactly what happened, definitely no one actually sat down to have a yummy meal of mammoth steak.

It turns out that the meat did look appetizing when thawed, but stank like old roadkill. The expedition erected a big tent over the dig site as they excavated the carcass, which was a slow process in 1901, and the smell became so bad that the expedition members had to take frequent breaks and leave the tent for fresh air.

Apparently the scientists got drunk one night and dared each other to try a bite of the meat, but even after they practically covered it in pepper to disguise the taste, no one could force any down. One man might have managed to eat a single bite, but reports vary. They fed the meat to the camp dogs instead, who were just fine. Dogs and wolves have short, fast digestive tracts and can tolerate eating foods that would make humans very sick.

But that’s not the only story of modern humans eating meat from frozen mammoth carcasses. It supposedly happened on January 13, 1951 at the Roosevelt Hotel’s grand ballroom in New York City. A group called the Explorers Club met for their annual fancy dinner that evening, and as always, the menu contained lots of exotic foods. The main course has gone down in history as being slices of mammoth meat from a 250,000-year-old carcass found in Alaska.

That’s where things get confusing, though, because supposedly the main course was megatherium meat found in Alaska. Megatherium was a giant ground sloth that hasn’t ever been found frozen in permafrost at all, certainly not in Alaska. It lived in South America. However, the Christian Science Monitor magazine thought megatherium was another word for mammoth and reported that the group was served mammoth meat.

Some of the Explorers Club members genuinely thought they were dining on megatherium. Some may have thought it was mammoth. The club’s press release just said “prehistoric meat,” which doesn’t sound very appetizing.

An Explorers Club member who couldn’t attend the dinner asked that his portion be saved for him in a bottle of formaldehyde that he provided. This was done, and the promoter himself, Wendell Phillips Dodge, better known as Mae West’s one-time film agent, filled out the supplied specimen card as “megatherium meat.” The club member put his bottled meat on display at the Bruce Museum in Greenwich, Connecticut, where he worked.

There the bottle stayed until 2001, when it ended up at the Yale Peabody Museum of Natural History. In 2014, a couple of Yale students ran DNA tests on the meat.

As you may have already guessed, the meat wasn’t from a mammoth or a giant ground sloth. It’s meat from the decidedly not extinct green sea turtle, although the green sea turtle is endangered and protected these days, so don’t eat it. Since green sea turtle soup was also served at the meal, it’s probable that the leftover turtle meat was called megatherium meat as a sort of joke. Dodge even published a statement after the dinner that he’d discovered how to turn green sea turtle into giant sloth meat. But by then the story of mammoth meat being served at the dinner had already passed into history.

But while we don’t know if anyone in modern times has eaten frozen mammoth meat, we do know for certain that a group of scientists did eat the meat of a mummified steppe bison that died around 36,000 years ago.

The bison was discovered in 1979 in Alaska and was nicknamed Blue Babe, both from the folktales of the giant lumberjack Paul Bunyon and his pet, Babe the Blue Ox, and because the mummy was coated in crystals of vivianite, which turns blue when exposed to oxygen. Eventually Blue Babe was taxidermied and put on display in the University of Alaska Museum at Fairbanks.

At some point, the team in charge of the specimen decided to try some of its meat in a stew, which from all accounts turned out okay and didn’t make anyone sick. The scientists examined the meat carefully before deciding to cook and eat it, and decided that it was basically freezer-burned but not actually rotten.

Dale Guthrie was part of the Blue Babe excavation team. I’ll quote the relevant paragraph from page 29 of her booklet Blue Babe. The Bjorn Kjurten mentioned in the quote is the man who helped preserve the mummy, and he was also the guy who interviewed one of the Russian scientists who tried to eat mammoth meat with pepper.

“To celebrate Eirich’s work and the new Blue Babe, we decided to cook a bison stew. A marvelous bit of luck had brought Bjorn Kjurten to Fairbanks for guest lectures, and we invited other friends who were game enough to try the stew. Spring was underway. With a good burgundy to brave the rather muddy tone of the dish, we toasted the past and present in the long evening twilight, a taste of the Pleistocene with friends who shared and added to it with their talents and imagination. It was a special evening.”

Guthrie reported that the meat wasn’t very good, but that anything is edible if you use enough onions.

In March of 2023, a company that produces lab-grown meat for human consumption made a giant meatball grown from mammoth DNA. They displayed it as a way to advertise the possibilities of lab-grown meat, but because this particular meat hasn’t been tested to make sure it’s safe for people to eat, no one was allowed to eat it. But maybe in the future, you’ll be able to order a mammoth steak from your local restaurant. Let me know what it tastes like.

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 356: The Volcano Rabbit

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Thanks to Eva for suggesting the adorable volcano rabbit this week!

Further watching:

American Pikas Calling Out

The volcano rabbit is not a volcano but it is a very small rabbit:

The volcano rabbit is SO CUTE:

The American pika looks kind of like its rabbit cousin [photo by Justin Johnsen, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=91574]:

Show transcript:

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

This week we have a suggestion from Eva, who wanted to learn about volcano rabbits! What are volcano rabbits? Do they shoot lava at their enemies? Let’s find out! (No, they don’t shoot lava. Sorry. That’d be awesome!)

The most important thing to know about the volcano rabbit is how small it is. It’s almost the smallest rabbit known. It typically only grows about 9 inches long, or 23 cm, and that’s when it’s stretched out. Rabbits usually sit more bunched up, which makes it look even smaller. Its ears are small and rounded, its tail is short even for a rabbit, and its legs are short. Its fur is also short and very thick, mostly grayish-tan in color.

The second most important thing to know about the volcano rabbit is how rare and endangered it is. That’s because it only lives in one small part of Mexico, specifically on the upper slopes of four volcanoes. Because people also live in this area, which isn’t far from Mexico City, the rabbits’ natural range is fragmented by human-made obstacles like highways that are dangerous for it to cross, along with habitat destruction from logging, livestock grazing, and the building of new houses. People even hunt the rabbit even though it’s a protected animal. We don’t know for sure how many of the volcano rabbits are left in the wild, but the best estimate is around 1,200 rabbits in small populations that are often widely separated. It’s even been declared extinct on another volcano where it used to live, although there may be a small population still hanging on.

The volcano rabbit prefers open woodland in higher elevations where there’s plenty of tall, dense grass native to the area. It makes rabbit-sized tunnels through the grass so it can move around undetected by predators. It also mostly eats this grass. It’s most active at dawn and dusk, which also helps it hide from predators.

When a volcano rabbit does feel threatened, it doesn’t thump its feet to alert other rabbits of danger. Instead, it gives a little alarm squeal. This is really unusual in a rabbit, but it’s something the pika does, and the pika is closely related to rabbits. The pika lives in parts of central Asia and western North America, especially in cold areas like mountaintops. It’s so well adapted to the cold that it can die if the temperature climbs over about 78 degrees Fahrenheit, or 25 Celsius.

The American pika actually looks a lot like the volcano rabbit in some ways, although it’s less rabbit-like in shape and more rodent-like, although it’s not a rodent. It’s a lagomorph. It’s about the same size or a little smaller than the volcano rabbit, with short legs and dense grayish-brown fur that grows longer in winter. It especially likes places with a lot of rocks, since it makes its home in little cracks and crevices between rocks. It prepares for winter by harvesting the plants it eats and storing them in little haypiles. Since it doesn’t hibernate, it needs plenty of food for times when snow and ice make it hard to find plants.

The pika is intensely territorial, because it doesn’t want any other pikas sneaking around eating up its hay, but it does communicate with other pikas. During breeding season the males will make a singing call to attract a female, and all pikas will call to warn others of a predator nearby. I couldn’t find any recordings of a volcano rabbit, but this is what an American pika sounds like:

(wait for it…)

[pika beeping]

Like other rabbits, the volcano rabbit eats grass and other plant parts. The problem is that most of the plants in its habitat are not very high in protein. The more fragmented its habitat is, the harder it is for the rabbits to find enough food to survive, much less to also reproduce. Every time someone decides to let cattle or other livestock graze on the local plants, the rabbits have that much less food.

Fortunately, conservationists in Mexico are working on educating people so they know this cute little rabbit is a protected species. Captive breeding programs are underway too, and parts of the volcanoes where the rabbit lives are within the bounds of a national park. There are plans to create safe corridors to link the rabbit’s fragmented habitats so it can come and go without getting squished by cars, and to restore its range with more native plants so it has plenty of food.

You might worry that the volcano rabbit, besides having all these issues with habitat loss and habitat fragmentation, is also in danger of its volcano home erupting. The volcanoes where it lives are active, but only one of the four poses any danger, and that volcano has erupted repeatedly in the last several hundred years without affecting the volcano rabbit. It actually even had a small eruption in May 2023. Schools in the area were closed for a few days, but no one was hurt, not even a rabbit.

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 355: Tiny Owls

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This week we learn about two tiny owls! Thanks to Elizabeth and Alexandra for their suggestions!

Further reading:

Burrowing Owl

Elf Owl

The burrowing owl is tiny but fierce [photo by Christopher Lindsey, taken from page linked above]:

The elf owl is also tiny but fierce [photo by Matthew Grube, taken from page linked above]:

Show transcript:

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

This week we’re going to learn about two tiny owls. Thanks to Elizabeth and Alexandra for their owl suggestions!

The burrowing owl is native to the Americas, especially the western part of North America, and most of Central and South America. It prefers grasslands and other open areas. It’s a small owl, not much bigger than the average songbird. It’s mostly brown with lighter underparts that are barred with a brown pattern.

You can tell a lot about an owl by the color of its eyes. In general, an owl with dark eyes is most active at night, an owl with orange or red eyes is likely to be most active at dawn and dusk, and an owl with yellow eyes is often active in the day. That’s not a hard and fast rule, but it can help you make a good guess about an owl’s behavior. The burrowing owl has yellow eyes, and it is indeed active in the day. The term for daytime activity is diurnal.

In past episodes I’ve said that owls have long legs that are usually hidden by feathers. In the case of the burrowing owl, its long legs are in plain sight because it spends a lot of the time running around on the ground. It will sometimes chase prey on foot, but other times it will perch on a fence post, tree branch, or some other high place to watch for a small animal to pass by. Then it will swoop down to grab it just like any other owl. It eats mice and other small rodents, lizards, small snakes, frogs, large insects and other invertebrates like scorpions and caterpillars, and birds. It especially likes termites and grasshoppers. Females are more likely to hunt during the daytime, while males are more likely to hunt at night or at dawn and dusk. Sometimes the burrowing owl will eat fruit and seeds too. When the burrowing owl has more food than it can eat, it will store some in underground larders.

The burrowing owl gets its name because it builds a nest in a burrow in the ground, often in burrows dug by other animals like prairie dogs and skunks. Some subspecies of burrowing owl will dig its own burrow, and all subspecies will enlarge an existing burrow until it’s happy with the size. It uses its beak to dig and kicks the dirt out with its feet. Both the male and female will work on the burrow together. Once it’s the right size and shape, the owl will bring in dried grass and other materials to line the burrow. One of its favorite materials is dried animal dung, especially from cattle. The dung releases moisture inside the burrow, making it more comfortable, and attracts insects that the owls eat. Win-win! It will also scatter animal dung around the entrance of its burrow and will sometimes also collect trash like bottle caps and pieces of foil to decorate the entrance.

The female lays her eggs in the burrow and spends most of her time incubating the eggs, only going outside briefly to stretch her legs. The male stands guard at the entrance to the burrow or nearby except when he’s out hunting. He brings food back for the female.

When the eggs hatch, both parents take care of the babies. At first the chicks stay in the burrow, but as they grow older they come out to play outside and start learning how to fly. Since burrowing owls usually nest in small colonies, there’s always an adult watching for danger somewhere nearby.

Most birds abandon their nests after their chicks are grown. The burrowing owl often uses its burrow year-round, although populations that migrate will usually make a new burrow when they return to their summer range. The burrow gives the owls a place to nap during the hottest part of the day, and it’s also a good place to hide if a predator approaches. Rattlesnakes also use burrows for the same purposes, and when a burrowing owl runs from a predator and hides in its burrow, it will mimic the rattling and hissing of an angry rattlesnake. A lot of times that’s enough to make a predator think twice about digging up the burrow.

This is what a burrowing owl sounds like when it’s not imitating an angry rattlesnake:

[burrowing owl call]

The burrowing owl is increasingly threatened by habitat loss and introduced predators likes cats and dogs. Luckily it’s an adaptive bird and is happy to use artificial burrows in protected areas. It’s a useful bird to have around since it eats a lot of insects, prairie dogs, and other animals that are considered pests by humans. Plus it’s an incredibly cute bird. I mean, it’s a tiny owl with long legs! How could you not find that cute?

Small as it is, the burrowing owl isn’t the smallest owl known. The elf owl is even smaller, about the size of a sparrow. It’s only about 5 inches tall, or 13 cm, with a wingspan of only 9 inches, or 22 cm. It lives in parts of the southwestern United States during the summer and parts of Mexico during the winter.

The elf owl is nocturnal like most other owls, and this is where our guideline of owl eye color breaks down, because the elf owl has yellow eyes. Its feathers are mostly gray or grayish-brown with white streaks. When it’s sitting on a twig, it kind of looks like a dead leaf or a broken-off branch.

It mostly eats insects, but it also likes scorpions, spiders, and centipedes. Occasionally it eats small reptiles or mammals. When it catches a scorpion, it removes the stinger before eating the scorpion, but it doesn’t seem to be hurt by actually being stung. It’s a fast, acrobatic flyer and catches insects on the wing, but it also hunts for insects on the ground and has long legs like the burrowing owl.

The elf owl nests in holes made by woodpeckers in trees or cacti, and the male brings the female food while she keeps the eggs warm. After the babies hatch, the male brings them food too and also continues to feed the female for another couple of weeks, until she starts to hunt again. The male will also catch a tiny snake called the western threadsnake, which looks a lot like an earthworm and only grows a foot long at most, or 30 cm, and is usually much smaller than that. It lives underground most of the time and while it has eyes, they don’t work except to sense light and dark. It eats insects, especially termites and ants. When an elf owl catches one of these little snakes, it doesn’t eat it. Instead, it brings the snake back to the nest and lets it go. The snake eats all the insects it can find, including parasites that might hurt the baby owls. Then again, sometimes the nest is inhabited by tree ants that do the same thing, cleaning up all the parasites and scraps of leftover food while not bothering the owls.

If a predator grabs an elf owl, or a scientist nets and handles one, the owl pretends to be dead. A lot of times this will cause the predator to relax its jaw muscles, which often allows the owl to wiggle free and fly away. The scientists are a little more careful about relaxing their hands, but when a scientist handles an elf owl, it’s usually to do a quick examination and maybe put a leg band on for identification purposes, and then they let the owl go again anyway.

This is what an elf owl sounds like:

[elf owl call]

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 352: The Not-Deer

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Happy Halloween! We have a super spooky episode for you this week, a full five out of five bats on the spookiness scale, all about the not-deer of modern folklore!

Join our Patreon and get bonus episodes and other perks! You can also buy copies of the Beyond Bigfoot & Nessie book and Kate’s other books!

Further reading:

Not Deer, or a Deer?

Days before Halloween, creepy trail photo reveals deer standing on 2 legs in NC woods

Sharon A Hill’s Spooky Geology (not about the not-deer but a lot of fun even so)

The white-tailed deer uses its bright white tail to warn other deer of danger:

White-tailed deer sometimes stand on their hind legs to reach vegetation or fight:

Show transcript:

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

Happy Halloween! It’s time for our spookiest episode of the year! It’s rated five out of five bats on our spookiness scale. If you like scary stories on Halloween, make some cocoa and popcorn and sit back to be spooked. If you’re not really a fan of the scarier stuff, you might want to skip this one. Some people also really don’t like hearing about diseases, and that’s one of the things we’ll be discussing. We’re going to talk about a really weird cryptid called the not-deer.

Before we get started, though, we have a little bit of housekeeping, as the big podcasters call it. First, I want to reassure everyone who has sent me suggestions that I’m trying to get to them as soon as possible. I love how many people listen and want to share their enthusiasm about animals, but I do feel bad that some people have been waiting a really long time for their suggestion to make it off of the massive humongous ever-growing ideas list into an episode.

At the same time, I’ve been thinking of ways to make money off the podcast without running ads. I make Strange Animals Podcast because I love helping people learn about animals and science, and I also really value the people who are able to support the podcast through Patreon. But I do put an awful lot of work into each episode, so much that it’s basically a second job. I thought about it, and decided to make a new Patreon tier that’s a little different from the others. It’s called the terror bird tier, and when I drew the art for it I forgot that terror birds didn’t have actual teeth, but we’ll call that artistic liberty. It’s a $25 a month tier, and not only do you get access to the bonus episodes that all patrons can listen to, after three months at that tier you can message me your episode idea AND tell me what week you’d like that episode to run. I’ve limited the new tier to 25 backers, to make it fair for people who don’t have the money for that, and honestly I don’t expect to get very many people at that level at all, because that’s a lot of money, but I thought I’d give it a try.

Finally, the Beyond Bigfoot & Nessie book is still available, as are my other books, and in 2024 I’m planning to attend some conventions again to sell copies of the book. I’ll let you know where I’ll be as I find out, in case you want to come say hi. I’m also very slowly working on a sequel to the book, tentatively titled Small Mysteries, which is all about mystery animals that are really small, like frogs and insects and teeny fish. It probably won’t be ready to publish for a few years, so I’m working hard to make sure it’s got a whole lot of footnotes with references. That’s one of the things I regret not doing for Beyond Bigfoot & Nessie.

Now, with all that out of the way, on to the spookiness!

The not-deer is a cryptid, or mystery creature, that’s mostly reported from the Appalachian region of the United States. I live in the southern Appalachians near the Smoky Mountains, but I’d never heard of the not-deer until a few months ago. I subscribe to Sharon Hill’s Strange Times newsletter, and also love her Spooky Geology website where you can learn all the science behind weird events like earthquake lights. There’s a link in the show notes, but you can search for https://spookygeology.com/ to find it. Sharon Hill wrote about the not-deer in mid-2023 in her newsletter, where she said the not-deer “looks like a deer until you REALLY look and find that it’s not a deer. It displays unsettling characteristics that scare the heck out of people.”

Reports vary, but in general, the not-deer is supposed to look like an ordinary deer at first glance, but then the witness realizes it’s really weird in some ways. Some people report that the deer appears to have extra joints in its legs, a misshapen or overly large head, an overly long neck or legs that are too long or too short, eyes that are close together on the front of its head instead of on the sides of its head as is normal with hoofed animals, and so on. It might walk on its hind legs like a human, and sometimes people say the creature appears to be unusually intelligent and not afraid of people.

The not-deer became popular online around the summer of 2020, especially on TikTok, with the term not-deer apparently coined in August 2019 on Tumblr, but the idea goes back several decades at least. According to Sharon Hill, Jerry Clark, the editor of Fate Magazine, collected two accounts of not-deer in 1971, although he didn’t call them not-deer because that term wasn’t invented yet.

To give you an idea of what we’re talking about, here are three accounts from a Reddit thread. I’ve reworded the stories to make them shorter and more appropriate for a general audience, but I haven’t changed any details.

First is a 2020 report from a Redditor in northern Georgia:

“I live at the foothills of the Appalachian mountains halfway in between Chattanooga and Atlanta and sometimes my family takes trips to the mountains. One day up there me and my cousin drove around to just take in the views. At around 8pm we were headed back and were nearly at our cabin when we saw a deer on the side of the road. We slowed down but as we got close, it walked into the road. I hit the brakes and then it stood up and started walking around on its back legs. My cousin and I have been out in nature with animals our whole lives but we’d never seen anything like it. It just looked so wrong! Its joints didn’t move right and it had arms not front legs, and its upper half was like a human excluding the head.”

The next story is from a Redditor in Virginia, who at the time of their encounter was riding a motorcycle slowly along the Skyline Drive in Shenandoah National Park at night, although when they encountered the deer they stopped to get a better look.

“It was like a deer drawn by someone who had never seen a deer after someone else described it to them. It stood on the left side of the road on the mountainside, and I saw the eyes long before my headlight showed it fully. It was easily the biggest deer I’ve seen, and the lack of any antlers that time in the year suggested that it was a doe. The head was almost bovine in shape, the legs seemed too long in proportion to the body (think maned wolf proportions), and the body was extremely barrel chested.

“As soon as I crossed into the other lane, it rose up onto its hind legs. It took two jerky, unnatural steps towards the center of the lane on 2 legs and froze again, staring directly at me. It suddenly shook its head wildly like a dog with a toy, took another short step, then HOPPED on two legs several times until it disappeared into the darkness on the right side of the road.

“I turned the light towards the side of the road. On that side, there was a sheer drop off compared to the roadway, and the deer’s head was just peeking over the edge, still looking at me. The drop off was about 40 to 50 feet [that’s about 12 to 15 meters], so there’s no way it was standing at the base of the mountainside.”

Finally, in June of 2023 a Redditor wrote:

“I believe I saw a not-deer 3 weeks ago on KY 10 just outside of Lenoxburg. I was driving home to Cincinnati and decided to take the back route. It was dusk and the deer were out and moving. I looked out to my driver’s side and saw a few deer in the field, however there was one closer to the road that was…off. It had small squatty hind legs and long almost ape-like front legs and its neck was too long. The second I laid eyes on it my stomach dropped and I felt a fear I’ve never experienced before. My dogs began to tremble and whine and the feeling didn’t go away until I got back across the river to Ohio.”

The most common deer in the Appalachian Mountains is the white-tailed deer. It’s common throughout most of North and Central America down into northern South America. It’s also an invasive species in some parts of the world where people have introduced it as a game animal. Different populations and subspecies vary in size, but the Virginia subspecies found in Appalachia generally grows up to 4 feet tall at the shoulder at most, or about 1.2 meters. Males are larger than females on average. It’s crespuscular, meaning it’s most active at dawn and dusk.

In summer the white-tailed deer is reddish-brown, and in winter its coat is more gray-brown. It gets its name from the underside of its tail, which is bright white. When a deer feels threatened, it raises its tail to warn other deer to be alert, and to warn a potential predator that the deer has spotted it. Baby deer, called fawns, are born in spring and have white spots that help camouflage them in dappled sunlight and shade under trees.

The male white-tailed deer, called a buck or stag, starts growing a new set of antlers in the summer. Antlers are made of bone, but they grow faster than any other mammal bones. While they’re growing, they’re covered in a special type of highly vascularized skin called velvet. The velvet supplies nutrients and oxygen to the antler as it grows, and since the antlers grow so fast, they need a whole lot of nutrients. A deer in poor health or who can’t find enough to eat will grow small antlers, while a healthy deer who has lots to eat will grow larger antlers. Older males usually have bigger antlers than younger males too. The female deer, called a doe, is attracted to bucks with bigger antlers because she can be sure he’s healthy.

Once the antler has finished growing, it actually dies. The velvet dries up and the deer will rub his antlers on a branch or other object to help remove it. Because there are so many blood vessels in the velvet, sometimes a deer who is shedding the velvet has his antlers, head, and face splattered in blood, but he’s not hurt, just messy. Bucks use their antlers to fight each other, although they also use them to attack potential predators. Around the end of winter or early spring, the buck sheds his old antlers in preparation for growing a new set.

Many sightings of not-deer are probably due to people seeing diseased or injured deer. Two diseases that are especially hard on deer are Epizootic Hemorrhagic Disease, or EHD, and Chronic Wasting Disease, or CWD.

EHD is a virus spread by biting flies and midges, and while many species of deer can catch it, white-tailed deer are especially vulnerable to it. Humans can’t catch it, so don’t worry unless you are a deer. Symptoms of EHD include lameness, swelling of the head and neck, a lack of fear of humans, drooling and a runny nose, panting, and fever, which leads to sick deer sometimes lying down in water to cool off. Many deer who catch EHD eventually recover.

CWD is a more serious disease, sometimes called zombie deer disease. It’s related to the so-called mad cow disease found in cattle, and scrapie found in sheep and goats, and it can affect various species of deer. It’s always fatal but it can take a long time to develop, up to two years after exposure until the first symptoms. It’s caused when a protein in the animal’s nervous system is abnormally folded, a condition that spreads and causes neurodegeneration and holes in the brain. CWD is spread from animal to animal, but it can also spread through the environment in water and soil. So far the disease hasn’t been found to spread to humans.

Variations of CWD have been around for a very long time in various animals, but it was first identified in 1967 in a population of captive mule deer in Colorado. By 1981 it had spread to wild elk and it continues to spread in both wild and captive deer, although it’s still very rare. Symptoms include trembling and staggering, repetitive motions like walking in circles, grinding of teeth, drooling, confusion, and loss of fear of humans.

In addition to all this, perfectly healthy deer can have unusual behavior that isn’t witnessed by humans very often. Deer can and do stand and even walk short distances on their back legs, mostly to reach food growing up high. Does in particular will sometimes fight by standing on their hind legs and boxing each other with their front hooves. I own an amazing book called The Deer of North America by Leonard Lee Rue III, and here’s an interesting quote from that book:

“The oddest example of deer locomotion I ever heard of…was witnessed by five people. In July of 1967, the group had been out looking for deer when their trip was cut short by heavy rain. On the way home they saw two deer in a field of high weeds. Suddenly one of the deer raised both of his hind feet in the air, as if it were doing a handstand, balancing and walking on its forefeet. They thought the deer was injured and had to walk that way, but then the second deer did the same thing. Both deer walked on just their front legs for a distance of about 75 feet to where they could no longer be seen. […] We are constantly learning new things about deer.”

Leonard Lee Rue III suggested that the deer were just playing around and having fun.

Most people don’t know a whole lot about deer behavior. Most not-deer reports come from people who witnessed the creature while driving in the dark, so they didn’t get a very good look at it. Plus, as I’ve said over and over, people see what they expect to see. The not-deer has become popular online over the last few years, which means when someone is driving along and sees a deer behaving in what they think is an unusual manner, they remember the not-deer stories. Their brain automatically fills in details they can’t really see, leading to the person remembering things like a deer with human arms or six eyes.

In addition, people like telling spooky stories to scare each other. It’s probable that at least some of the scariest not-deer accounts are fiction. So if you see a deer, you don’t have to be scared. Just observe it and you might just learn something new about deer behavior. (Or something spooky will happen, in which case you have a great opportunity for a TikTok video.) Happy Halloween!

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 350: Bigfeet and Littlefeet

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It’s another spooky episode (three out of five bats on this year’s spookiness scale), with suggestions from Will and Pranav!

Further reading:

Tracking the Swamp Monsters

Further watching:

The Harlan Ford Footage (Honey Island Swamp Monster)

A crab-eating macaque:

A plaster cast purportedly from the Honey Island Swamp Monster’s footprints [photo from article linked above]:

Alligator tracks in the mud [photo from this site]:

Show transcript:

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

This week as monster month continues, we’ll learn about three more strange bipedal monsters suggested by Will and Pranav. This is another episode that I’ll give three out of five bats for spookiness. We’ve definitely got some spooky monsters this year (also you may be sensing a theme).

We’ll start with Will’s suggestion, the yara-ma-yha-who. We talked about it once before back in episode 219, but it’s such a strange monster that it definitely deserves more attention.

According to a 1932 book called Myths and Legends of the Australian Aboriginals, the yara-ma-yha-who is a little red goblin creature that stands about four feet tall, or 1.2 meters. It’s skinny all over except for its head and belly, and its mouth is especially big, like a frog’s mouth. It doesn’t have any teeth, but it can open its jaws incredibly wide like a snake, which allows it to swallow its food whole. And what is its food? People!

The yara-ma-yha-who was supposed to live in trees, especially the wild fig tree that has thick branches. In the summer when someone would stop under the tree for shade, or in the winter when it was rainy and someone would stop for shelter, the yara-ma-yha-who would drop down and grab the person.

The ends of the yara-ma-yha-who’s fingers were said to be cup-shaped suckers, and when the suckers fastened onto a person’s arm, they were able to suck blood right through the person’s skin. After the person became weak from blood loss and fainted, the yara-ma-yha-who was able to swallow them whole.

After that, the yara-ma-yha-who would drink a lot of water and fall asleep, and when it woke up it would vomit up its meal. If the person was still alive, they were supposed to lie still and pretend to be dead even while the yara-ma-yha-who poked at them to see if they responded. If the person moved, the yara-ma-yha-who would swallow them again and the whole thing would start over. But every time a person was swallowed by the little red goblin, when they were vomited up again they were shorter and redder, until after three or four times if they couldn’t get away, the person was transformed into another yara-ma-yha-who.

Some cryptozoologists speculate that the yara-ma-yha-who may be based on the tarsier, which is the subject of episode 219 and why we talked about this particular monster in that episode. The tarsier has never lived in Australia, although it does live in relatively nearby islands. Most tarsier species have toe pads that help them cling to branches, but so do many frogs that do live in Australia. It’s much more likely that the legend of the yara-ma-yha-who was inspired by frogs, snakes, monitor lizards, and other Australian animals. More importantly, the monster was used as a cautionary tale to warn children not to go off by themselves into the bush.

Unfortunately, the only information about the yara-ma-yha-who comes from this 1932 book. We don’t know which Aboriginal peoples this story was collected from, and we don’t know how much it was changed in translation to English. It’s still a fun story, though.

Next, we’ll talk about Pranav’s suggestions. Last week we talked about the monkey-man of New Delhi, and one of the monsters we’ll cover today is also a monkey-man from Asia, this time from Singapore. It’s the Bukit Timah Monkey-Man, said to mainly live in the Bukit Timah rainforest nature reserve but occasionally seen in the city surrounding the nature reserve.

The Bukit Timah Monkey-Man is supposed to look like a monkey the size of a human. It walks like a human on two legs and otherwise looks like a person, but is covered in gray hair and has a monkey-like face. It’s only ever seen at night and although people are scared when they see it, the monster has never attacked anyone and doesn’t seem to be interested in people at all. The oldest report possibly dates back to 1805, or to the 1940s according to other accounts, but sightings are rare.

One very common monkey that lives in Bukit Timah is the crab-eating macaque, also called the long-tailed macaque and I bet you can guess why. Its tail is longer than its body, although its arms and legs are shorter than in most monkeys. It mostly lives on the ground and eats pretty much anything, although most of its diet is fruit and other plant materials. It does sometimes eat crabs, and is good at swimming and diving to find them, but it also eats bird eggs and nestlings, lizards, frogs, insects, and other small animals. It even has a cheek pouch where it can store extra food to eat later.

Like the rhesus macaque we talked about last week, the crab-eating macaque is pretty small, with a big male weighing about 20 lbs, or 9 kg, at most. That’s about the size of a small dog. The fur on its back and head is a light golden brown, and its face, arms and legs, and underparts are gray with white markings. Its tail is usually darker brown. In other words, in the dark it might look like it’s pale gray all over but its tail is harder to see, and the monkey-man isn’t reported to have a tail.

The crab-eating macaque is common in the city of Bukit Timah, and in fact it’s common in a lot of cities and is even an invasive species in some parts of the world. People in Bukit Timah are used to seeing this particular type of monkey, but it’s so small that no one could mistake it for a human-sized monster. Then again, most of the stories about the monkey-man are friend-of-a-friend stories, often told by children to scare each other. It’s very likely that the Bukit Timah monkey-man is just an urban legend.

Our last monster this week is another suggestion by Pranav, the Honey Island Swamp monster. This one is from the United States, specifically the Honey Island Swamp in St. Tammany Parish, Louisiana.

In 1974, a couple of hunters claimed they found strange footprints in the swamp, and had seen the monster itself back in 1963. They said it stood seven feet tall, or over 2 meters, and was covered with long gray hair. Its eyes were a brilliant amber in color. The monster was on all fours at first, but when it heard the men talking it stood up to look at them, then ran away. Heavy rain later that day washed its tracks away.

When the men saw the same tracks in 1974, they used plaster to make copies of the footprints. But the footprints don’t look like plaster casts of other bigfoot-type tracks, which resemble giant human footprints. The swamp monster appears to have four toes that are spread widely apart, with one sticking out to the side like a thumb, and show the impression of webbing in between. It’s also not that big of a foot, not quite 10 inches long, or 25 cm.

Both the hunters were air traffic controllers, which is a job that requires people to make decisions carefully and remain calm in stressful situations, in order to keep airplanes from crashing into each other. These were the sort of people you’d trust if they told you they’d seen something really weird in the swamp. The two men were even interviewed for an episode of the TV show “In Search Of” that aired in 1978, which popularized the Honey Island Swamp monster outside of the local area. Both men continued to search for the monster, reporting that they’d caught at least one more glimpse of it and had even shot at it without apparently hitting it.

One of the men, Harlan Ford, died in 1980. He had taken up wildlife photography after his retirement and when his granddaughter was going through his belongings, she found some Super 8 film footage that showed something very peculiar. It was a brief video of the swamp, but if you look closely, a shadowy human-sized figure crosses behind trees from right to left, visible for maybe half a second. I put a link in the show notes if you want to look at the footage yourself. It took me two watches before I noticed the figure and to me it looks like the shadow of a human walking normally, but it’s so grainy it’s hard to tell.

It’s possible that the two men decided to have fun with a harmless prank about a monster in the swamp, but so many people took them seriously that it kind of got out of hand. Then again, maybe they did genuinely see something unusual. That doesn’t mean it was an actual monster, though. Black bears do live in the swamp, and my personal theory is that bears are responsible for a whole lot of bigfoot sightings.

The American alligator is also common in the area. The gator’s front feet have five toes, but the hind feet only have four. The toes are webbed to help the gator swim more easily, and the front foot’s pinkie toe usually sticks out to the side. Sometimes the first two toes of the front foot are held close enough together that they look like one big toe. Usually an alligator drags its tail as it walks, but it also has a gait called the high walk where its tail is completely off the ground. The plaster tracks found by the two hunters in 1974 look suspiciously like a really big alligator print, probably twice the size of an ordinary adult gator.

More importantly, people who have lived in the Honey Island swamp their entire lives, fishing and hunting and running boat tours, don’t report ever seeing an animal they don’t recognize. Maybe there is an incredibly rare monster that lives in the swamps and walks bipedally at least part of the time, but more likely the Honey Island Swamp Monster is a tall tale.

There are a lot of reasons why people tell stories about swamp monsters or monkey-men or murderous red goblins. It’s a good way to stop little kids from wandering around in dangerous places, and it’s fun to scare yourself and others with a story when you know you’re actually safe. There are plenty of dangerous animals in the world, many of which are completely unknown to science. I just don’t think these three are ones you need to worry about.

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 348: Australopithecus and Gigantopithecus

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Thanks to Anbo for suggesting Australopithecus! We’ll also learn about Gigantopithecus and Bigfoot!

Further reading:

Ancient human relative, Australopithecus sediba, ‘walked like a human, but climbed like an ape’

Human shoulders and elbows first evolved as brakes for climbing apes

You Won’t Believe What Porcupines Eat

Past tropical forest changes drove megafauna and hominin extinctions

An Australopithecus skeleton [photo by Emőke Dénes – kindly granted by the author, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=78612761]:

Show transcript:

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

It’s officially monster month, also known as October, so let’s jump right in with a topic suggested by Anbo! Anbo wanted to learn about Australopithecus, and while we’re at it we’re going to talk about Gigantopithecus and Bigfoot. On our spookiness rating scale of one to five bats, where one bat means it’s not a very spooky episode and five bats means it’s really spooky, this one is going to fall at about two bats, and only because we talk a little bit about the Yeti and Bigfoot at the end.

In 1924 in South Africa, the partial skull of a young primate was discovered. Primates include monkeys and apes along with humans, our very own family tree. This particular fossil was over a million years old and had features that suggested it was an early human ancestor, or otherwise very closely related to humans.

The fossil was named Australopithecus, which means “southern ape.” Since 1924 we’ve discovered more remains, enough that currently, seven species of Australopithecus are recognized. The oldest dates to a bit over 4 million years old and was discovered in eastern Africa.

Australopithecus was probably pretty short compared to most modern humans, although they were probably about the size of modern chimpanzees. A big male might have stood about 4 ½ feet tall, or 1.5 meters. They were bipedal, meaning they would have stood and walked upright all the time. That’s the biggest hint that they were closely related to humans. Other great apes can walk upright if they want, but only humans and our closest ancestors are fully bipedal.

In 2008 a palaeoanthropologist named Lee Rogers Berger took his nine-year-old son Matthew to Malapa Cave in South Africa. Dr. Berger was leading an excavation of the cave and Matthew wanted to see it. While he was there, Matthew noticed something that even his father had overlooked. It turned out to be a collarbone belonging to an Australopithecus boy who lived almost 2 million years ago. Later, Dr Berger’s team uncovered more of the skeleton and determined that the remains belonged to a new species of Australopithecus, which they named Australopithecus sediba. More remains of this species were discovered later, including a beautifully preserved lower back. That discovery was important because it allowed scientists to determine that this species of Australopithecus had already evolved the inward curve in the lower back that humans still have, which helps us walk on two legs more easily. That was a surprise, since A. sediba also still shows features that indicate they could still climb trees like a great ape.

It’s possible that Australopithecus, along with other species of early humans, climbed trees at night to stay safe from predators. In the morning, they climbed down to spend the day mostly on the ground. One study published only a few weeks ago as this episode goes live suggests that the flexible shoulders and elbows that humans share with our great ape cousins originally evolved to help apes climb down from trees safely. Monkeys don’t share our flexible shoulder and elbow joints because they’re much lighter weight than a human or ape, and don’t need as much flexibility to keep from falling while climbing down. Apes and hominins like humans can raise our arms straight up over our heads, and we can straighten our arms out completely flat. Australopithecus could do the same. The study suggests that when another human ancestor, Homo erectus, figured out how to use fire, they stopped needing to climb trees so often. They evolved broader shoulders that allowed them to throw spears and other weapons much more accurately.

Australopithecus probably mostly ate fruit and other plant materials like vegetables and nuts, along with small animals that they could catch fairly easily. This is similar to the diet of many great apes today. The big controversy, though, is whether Australopithecus made and used tools. Their hands would have been more like the hands of a bonobo or chimpanzee, which have a lot of dexterity, but not the really high-level dexterity of modern humans and our closest ancestors. Stone tools have been found in the same areas where Australopithecus fossils have been found, but we don’t have any definitive proof that they made or used the tools. There were other early hominins living in the area who might have made the tools instead.

We also don’t really know what Australopithecus looked like. Some scientists think they had a lot of body hair that would have made them look more like apes than early humans, while some scientists think they had already started losing a lot of body hair and would have looked more human-like as a result.

There’s no question these days that Australopithecus was an early human ancestor. We don’t have very many remains, but we do have several skulls and some nearly complete skeletons, which tells us a lot about how our distant ancestor lived. But we know a lot less about a fossil ape that lived as recently as 350,000 years ago, and it’s become confused with modern stories of Bigfoot.

Gigantopithecus first appears in the fossil record about 2 million years ago. It lived in what is now southern China, although it was probably also present in other parts of Asia. It was first discovered in 1935 when an anthropologist identified two teeth as belonging to an unknown species of ape, and since then scientists have found over a thousand teeth and four jawbones, more properly called mandibles.

The problem is that we don’t have any other Gigantopithecus bones. We don’t have a skull or any parts of the body. All we have are a few mandibles and lots and lots of teeth. The reason we have so many teeth is because Gigantopithecus had massive molars, the biggest of any known species of ape, with a protective layer of enamel that was as much as 6 mm thick. Some of the teeth were almost an inch across, or 22 mm. A lot of the remaining bones were probably eaten by porcupines, and in fact the mandibles discovered show evidence of being gnawed on. This sounds bizarre, but porcupines are well-known to eat old bones along with the shed antlers of deer, which supplies them with important nutrients. The teeth were too hard for the porcupines to eat.

We know that Gigantopithecus was a big ape just from the size of its mandible, but without any other bones we can only guess at how big it really was. It was potentially much bigger and taller than even the biggest gorilla, but maybe it had a great big jaw but short legs and it just sat around and ate plants all the time. We just don’t know.

What we do know is that its massive jaw and teeth were adapted for eating fibrous plant material, not meat. The thick enamel would help protect the teeth from grit and dirt, which suggested it ate tubers and roots that would have had a lot of dirt on them, although its diet was probably more varied. Scientists have even discovered traces of seeds from fruits belonging to the fig family stuck in some of the fossilized teeth, and evidence of tooth cavities that would have resulted from eating a lot of fruit long before toothpaste was invented.

Many scientists thought at first that Gigantopithecus was a human ancestor, but one that grew to gigantic size. It was even thought to be a close relation to Australopithecus. Other scientists argued that Gigantopithecus was more closely related to modern great apes like the orangutan. The debate on where Gigantopithecus should be classified in the ape and human family tree happened to overlap with another debate about a giant ape-like creature, the Yeti of Asia and the Bigfoot of North America.

We talked about the Yeti way back in episode 35, our very first monster month episode in 2017. Expeditions by European explorers to summit Mount Everest, which is on the border between China and Nepal, started in 1921. That first expedition found tracks in the snow resembling a bare human foot at an elevation of 20,000 feet, or 6,100 meters. They realized the tracks were probably made by wolves, with the front and rear tracks overlapping, which only looked human-like after the snow melted enough to obscure the paw pads. Expedition leader Charles Howard-Bury wrote in a London Times article that the expedition’s Sherpa guides claimed the tracks were made by a wild hairy man, but he also made it clear that this was just a superstition. But journalists loved the idea of a mysterious wild man living on Mount Everest. One journalist in particular, Henry Newman, interviewed the guides and specifically asked them about the creature. He wrote a sensational account of the wild man, but he mistranslated their term for it as the abominable snowman.

The word Yeti comes from a Sherpa term yeh-teh, meaning “animal of rocky places,” although it may be related to the term meh-teh, which means man-bear. But the peoples who live in and around the Himalayas belong to different cultures and speak a lot of different languages. There are lots of stories about the hairy wild man of the mountains, and lots of different words to describe the creature of those stories. And the idea of the Yeti that has become popular in Europe and North America doesn’t match up with the local stories. Locals describe the Yeti as brown, black, or even reddish in color, not white, and it doesn’t always have human-like characteristics. Sometimes it’s described as bear-like, panther-like, or just a general monster.

The abominable snowman, or Yeti, became popular in newspaper articles after the 1921 Mount Everest expedition, and it continued to be a topic of interest as expeditions kept attempting to summit the mountain. It wasn’t until May 26, 1953 that the first humans reached the tippy-top of Mount Everest, the New Zealand explorer Edmund Hillary and the Nepali Sherpa climber Tenzing Norgay. Many other successful expeditions followed, including some that were mounted specifically to search for the Yeti.

In the meantime, across the planet in North America, a Canadian schoolteacher and government agent named John W. Burns was collecting reports of hairy wild men and giants from the native peoples in British Columbia. He’s the one who coined the term Sasquatch in 1929. In the 1930s, a man in Washington state in the U.S, which is close to British Columbia, Canada, carved some giant feet out of wood and made tracks with them in a national forest to scare people, leading to a whole spate of big human-like tracks being faked in California and other places. But it wasn’t until 1982 that the hoaxes started to be revealed as the perpetrators got old and decided to clear up the mystery.

But in the 1920s and later, the popularity of the abominable snowman in popular media, giant gorillas like King Kong in the movies, the Yeti expeditions in the Himalayas, the mysterious giant footprints on the west coast of North America, and John Burns’s articles about the Sasquatch all combined to make Bigfoot, a catchall term for any giant human-like monster, a modern legend. People who believed that Bigfoot was a real creature started looking for evidence of its existence beyond footprints and reports of sightings. In 1960, a zoologist writing about a photograph of supposed Yeti tracks taken in 1951 suggested that the Yeti might be related to Gigantopithecus.

On the surface this actually makes sense. The Yeti, AKA the abominable snowman, is reported in the Himalayan Mountains of Asia. The mountain range started forming 40 to 50 million years ago when the Indian tectonic plate crashed into the Eurasian plate very slowly, pushing its way under the Eurasian plate and scrunching the land up into massively huge mountains. It’s still moving, by the way, and the Himalayas get about 5 mm taller every year. The eastern section of the Himalayas isn’t that far from where Gigantopithecus remains have been found in China, and we also know that at many times in the earth’s recent past, eastern Asia and western North America were connected by the land bridge Beringia. Humans and many animals crossed Beringia to reach North America, so why not Gigantopithecus or its descendants? That would explain why Bigfoot is so big, since in 1957 one scientist estimated that Gigantopithecus might have stood up to 12 feet tall, or 3.7 meters.

Some people still think Gigantopithecus was a cousin of Australopithecus, that it walked upright but was huge, and that its descendants are still around today, hiding in remote areas and only glimpsed occasionally. But people who believe such an idea are stuck in the past, because in the last 60 years we’ve learned a whole lot more about Gigantopithecus.

These days, more sophisticated study of Gigantopithecus fossils have allowed scientists to classify it as a great ape ancestor, not an early human. Gigantopithecus was probably most closely related to modern orangutans, in fact, and may have shared a lot of traits with orangutans. It probably could walk upright if it wanted to, but it wasn’t fully bipedal the way humans and human ancestors are. One theory prevalent in 2017 when we talked about the Yeti before was that Gigantopithecus mostly ate bamboo and might have gone extinct when the giant panda started competing with its food sources. This theory has already fallen out of favor, though, and we know that Gigantopithecus was eating a much more varied diet than just bamboo.

We also know that Gigantopithecus lived in tropical broadleaf forests common throughout southern Asia at the time. About a million years ago, though, many of these forests became grasslands. Gigantopithecus probably went extinct as a direct result of its forest home vanishing. It just couldn’t find enough food and shelter on open grasslands, and even though it held on for hundreds of thousands of years, by about 350,000 years ago it had gone extinct. Around 100,000 years ago the forests started reclaiming much of these grasslands, but by then it was too late for Gigantopithecus. Meanwhile, the oldest evidence we have of the land bridge Beringia joining Asia and North America was 70,000 years ago.

There is no evidence that any Gigantopithecus descendant survived to populate the Himalayas or migrated into North America. For that matter, there’s no evidence that Bigfoot actually exists. If a live or dead Bigfoot is discovered and studied by scientists, that would definitely change a lot of things, and would be really, really exciting. But even if that happened, I’m pretty sure we’d find that Bigfoot wasn’t related to Gigantopithecus. Whether it would be related to Australopithecus and us humans is another thing, and that would be pretty awesome. But first, we have to find evidence that isn’t just some footprints in the mud or snow.

Some Bigfoot enthusiasts suggest that the reason we haven’t found any Bigfoot remains is the same reason why we don’t have Gigantopithecus bones, because porcupines eat them. But while porcupines do eat old dry bones they find, they don’t eat fresh bones and they don’t eat all the bones they find. For any bone to fossilize is rare, so the more bones that are around, the more likely that one or more of them will end up preserved as fossils. Bones of modern animals are much easier to find, porcupines or no, but we don’t have any Bigfoot bones. We don’t even have any Bigfoot teeth, which porcupines don’t eat.

Porcupines can be blamed for a lot of things, like chewing on people’s cars and houses, but you can’t blame them for eating up all the evidence for Bigfoot.

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 342: Giant Snails and Giant Crabs

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Thanks to Tobey and Anbo for their suggestions this week! We’re going to learn about some giant invertebrates!

Further reading:

The Invasive Giant African Land Snail Has Been Spotted in Florida

A very big shell:

The giant African snail is pretty darn giant [photo from article linked above]:

The largest giant spider crab ever measured, and a person:

Show transcript:

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

This week we’re going to learn about some giant invertebrates, suggested by Tobey and Anbo. Maybe they’re not as big as dinosaurs or whales, but they’re surprisingly big compared to most invertebrates.

Let’s start with Tobey’s suggestion, about a big gastropod. Gastropods include slugs and snails, and while Tobey suggested the African trumpet snail specifically, I couldn’t figure out which species of snail it is. But it did lead me to learning a lot about some really big snails.

The very biggest snail known to be alive today is called the Australian trumpet snail, Syrinx aruanus. This isn’t the kind of snail you’d find in your garden, though. It’s a sea snail that lives in shallow water off the coast of northern Australia, around Papua New Guinea, and other nearby areas. It has a coiled shell that’s referred to as spindle-shaped, because the coils form a point like the spindle of a tower. It’s a pretty common shape for sea snails and you’ve undoubtedly seen this kind of seashell before if you’ve spent any time on the beach. But unless you live in the places where the Australian trumpet lives, you probably haven’t seen a seashell this size. The Australian trumpet’s shell can grow up to three feet long, or 91 cm. Not only is this a huge shell, the snail itself is really heavy. It can weigh as much as 31 lbs, or 14 kg, which is as heavy as a good-sized dog.

The snail eats worms, but not just any old worms. If you remember episode 289, you might remember that Australia is home to the giant beach worm, a polychaete worm that burrows in the sand between high and low tide marks. It can grow as much as 8 feet long, or 2.4 meters, and probably longer. Well, that’s the type of worm the Australian trumpet likes to eat, along with other worms. The snail extends a proboscis into the worm’s burrow to reach the worm, but although I’ve tried to find out how it actually captures the worm in order to eat it, this seems to be a mystery. Like other gastropods, the Australian trumpet eats by scraping pieces of food into its mouth using a radula. That’s a tongue-like structure studded with tiny sharp teeth, and the Australian trumpet has a formidable radula. Some other sea snails, especially cone snails, are able to paralyze or outright kill prey by injecting it with venom via a proboscis, so it’s possible the Australian trumpet does too. The Australian trumpet is related to cone snails, although not very closely.

Obviously, we know very little about the Australian trumpet, even though it’s not hard to find. The trouble is that its an edible snail to humans and humans also really like those big shells and will pay a lot for them. In some areas people have hunted the snail to extinction, but we don’t even know how common it is overall to know if it’s endangered or not.

Tobey may have been referring to the giant African snail, which is probably the largest living land snail known. There are several snails that share the name “giant African snail,” and they’re all big, but the biggest is Lissachatina fulica. It can grow more than 8 inches long, or 20 cm, and its conical shell is usually brown and white with pretty banding in some of the whorls. It looks more like the shell of a sea snail than a land snail, but the shell is incredibly tough.

The giant African snail is an invasive species in many areas. Not only will it eat plants down to nothing, it will also eat stucco and concrete for the minerals they contain. It even eats sand, cardboard, certain rocks, bones, and sometimes other African giant snails, presumably when it runs out of trees and houses to eat. It can spread diseases to plants, animals, and humans, which is a problem since it’s also edible.

Like many snails, the African giant snail is a simultaneous hermaphrodite, meaning it can produce both sperm and eggs. It can’t self-fertilize its own eggs, but after mating a snail can keep any unused sperm alive in its body for up to two years, using it to fertilize eggs during that whole time, and it can lay up to 200 eggs five or six times a year. In other words, it only takes a single snail to produce a wasteland of invasive snails in a very short amount of time.

In June 2023, some African giant snails were found near Miami, Florida and officials placed the whole area under agricultural quarantine. That means no one can move any soil or plants out of the area without permission, since that could cause the snails to spread to other places. Meanwhile, officials are working to eradicate the snails. Other parts of Florida are also under the same quarantine after the snails were found the year before. Sometimes when people go on vacation in the Caribbean they bring back garden plants, without realizing that the soil in the pot contains giant African snail eggs, because the giant African snail is also an invasive species throughout the Caribbean.

Next, Anbo wanted to learn about the giant spider crab, also called the Japanese spider crab because it lives in the Pacific Ocean around Japan. It is indeed a type of crab, which is a crustacean, which is an arthropod, and it has the largest legspan of any arthropod known. Its body can grow 16 inches across, or 40 cm, and it can weigh as much as 42 pounds, or 19 kg, which is almost as big as the biggest lobster. But its legs are really really really long. Really long! It can have a legspan of 12 feet across, or 3.7 meters! That includes the claws at the end of its front legs. Most individual crabs are much smaller, but since crustaceans continue to grow throughout their lives, and the giant spider crab can probably live to be 100 years old, there’s no reason why some crabs couldn’t be even bigger than 12 feet across. Its long legs are delicate, though, and it’s rare to find an old crab that hasn’t had an injury to at least one leg.

The giant spider crab is orange with white spots, sort of like a koi fish but in crab form. Its carapace is also bumpy and spiky. You wouldn’t think a crab this size would need to worry about predators, but it’s actually eaten by large octopuses. The crab sticks small organisms like sponges and kelp to its carapace to help camouflage it.

The giant spider crab is considered a delicacy in some places, which has led to overfishing. It’s now protected in Japan, where people are only allowed to catch the crabs during part of the year. This allows the crabs to safely mate and lay eggs.

There’s another species called the European spider crab that has long legs, but it’s nowhere near the size of the giant spider crab. Its carapace width is barely 8 ½ inches across, or 22 cm, and its legs are about the same length. Remember that the giant spider crab’s legs can be up to six feet long each, or 1.8 meters. While the European spider crab does resemble the giant spider crab in many ways, it’s actually not closely related to it. They two species belong to separate families.

The giant spider crab spends most of its time in deep water, although in mating season it will come into shallower water. It uses its long legs to walk around on the sea floor, searching for food. It’s an omnivore that eats pretty much anything it can find, including plants, dead animals, and algae, but it will also use its claws to open mollusk shells and eat the animals inside. It prefers rocky areas of the sea floor, since its bumpy carapace blends in well among rocks.

Scientists report that the giant spider crab is mostly good-natured, even though it looks scary. Some big aquariums keep giant spider crabs, and the aquarium workers say the same thing. But it does have strong claws, and if it feels threatened it can seriously injure divers. I shouldn’t need to remind you not to pester a crab with a 12-foot legspan.

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 341: The Leaf Sheep and the Mold Pig

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Thanks to Murilo and an anonymous listener for their suggestions this week!

Further reading:

The ‘sheep’ that can photosynthesize

Meet the ‘mold pigs,’ a new group of invertebrates from 30 million years ago

A leaf sheep:

Shaun the sheep:

A mold pig:

Show transcript:

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

This week let’s learn about two animals that sound like you’d find them on a farm, but they’re much different than their names imply. Thanks to Murilo for suggesting the leaf sheep, which is where we’ll start.

The leaf sheep isn’t a sheep or a leaf. It’s actually a type of sea slug that lives in tropical waters near Japan and throughout much of coastal south Asia. The reason it’s called a leaf sheep is because it actually looks a lot like a tiny cartoon sheep covered with green leaves instead of wool.

Back in episode 215 we talked about the sea bunny, which is another type of sea slug although it’s not closely related to the leaf sheep. The leaf sheep is even smaller than the sea bunny, which can grow up to an inch long, or about 25 mm. The leaf sheep only grows about 10 mm long at most, which explains why it wasn’t discovered until 1993. No one noticed it.

The leaf sheep’s face is white or pale yellow with two tiny black dots for eyes set close together, which kind of makes it look like Shaun the Sheep. It also has two black-tipped protuberances that look like ears, although they’re actually chemoreceptors called rhinophores. The rest of its body is covered with leaf-shaped spines called cerata, which are green and often tipped with pink, white, or black. This helps disguise it as a plant, but there’s another reason why it’s green.

The leaf sheep eats a particular kind of algae called Avrainvillea, which looks like moss or fuzzy carpet. While algae aren’t exactly plants or animals, many do photosynthesize like plants. In other words, they transform sunlight into energy to keep them alive. In order to photosynthesize, a plant or algae uses a special pigment called chlorophyll that makes up part of a chloroplast in its cells, which happens to be green.

The leaf sheep eats the algae, but it doesn’t digest the chloroplasts. Instead, it absorbs them into its own body and uses them for photosynthesis. That way it gets nutrients from eating and digesting algae and it gets extra energy from sunlight. This is a trait shared by other sea slugs in the superorder Sacoglossa. Because they need sunlight for photosynthesis, they live in shallow water, often near coral reefs.

When the leaf sheep’s eggs hatch, the larvae have shells, but as they mature they shed their shells.

This is a good place to talk about cyanobacteria, which was requested ages ago by an anonymous listener. Cyanobacteria mostly live in water and are also called blue-green algae, even though they’re not actually classified as algae. They’re considered bacteria, although not every scientist agrees. Some are unicellular, meaning they just consist of one cell, while others are multicellular like plants and animals, which means they have multiple cells specialized for different functions. Some other cyanobacteria group together in colonies. So basically, cyanobacteria looked at the chart of possible life forms and said, “yes, thanks, we’ll take some of everything.” That’s why it’s so hard to classify them.

Cyanobacteria photosynthesize, and they’ve been doing so for far longer than plants–possibly as much as 2.7 billion years, although scientists think cyanobacteria originally evolved around 3.5 billion years ago. The earth is about 4.5 billion years old and plants didn’t evolve until about 700 million years ago.

Like most plants also do, cyanobacteria produce oxygen as part of the photosynthetic process, and when they started doing so around 2.7 billion years ago, they changed the entire world. Before then, earth’s atmosphere hardly contained any oxygen. If you had a time machine and went back to more than two billion years ago, and you forgot to bring an oxygen tank, you’d instantly suffocate trying to breathe the air. But back then, even though animals and plants didn’t yet exist, the world contained a whole lot of microbial life, and none of it wanted anything to do with oxygen. Oxygen was toxic to the lifeforms that lived then, but cyanobacteria just kept producing it.

Cyanobacteria are tiny, but there were a lot of them. Over the course of about 700 million years, the oxygen added up until other lifeforms started to go extinct, poisoned by all that oxygen in the oceans and air. By two billion years ago, pretty much every lifeform that couldn’t evolve to use or at least tolerate oxygen had gone extinct. So take a deep breath of life-giving oxygen and thank cyanobacteria, which by the way are still around and still producing oxygen. However, they’re still up to their old tricks because they also produce what are called cyanotoxins, which can be deadly.

That brings us to another animal in our imaginary farm, the mold pig. It’s not a pig or a mold, and unlike the leaf sheep and cyanobacteria, it’s extinct. At least, we think it’s extinct.

The mold pig is a microinvertebrate only discovered in 2019. The only reason we know about it at all is because of amber found in the Dominican Republic, on an island in the Caribbean Sea. As we’ve discussed in past episodes, especially episode 108, amber is the fossilized resin of certain types of tree, and sometimes the remains of small animals are found inside. Often these animals are insects, but sometimes even tinier creatures are preserved that we would otherwise probably never know about.

The mold pig was about 100 micrometers long, or .1 millimeter. You’ve probably heard of the tardigrade, or water bear, which we talked about in episode 234, and if so you might think the mold pig was a type of tardigrade just from looking at it, since it looks similar. It had four pairs of legs like tardigrades do, but while scientists think they were related, and that the mold pig was probably also related to mites, it was different enough that it’s been classified in its own genus and may need to belong to its own phylum. Its official name is Sialomorpha.

The mold pig probably ate mold, fungus, and microscopic invertebrates. It lived around 30 million years ago, and right now that’s about all we know about it. There’s a good chance that it still survives somewhere in the world, but it’s so tiny that it’s even easier to overlook than the leaf sheep. Maybe you will be the person who rediscovers its living descendants.

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 339: The Tully Monster!

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Is it an invertebrate? Is it a vertebrate? It’s the Tully monster!

Further reading:

3D Tully monster probably not related to vertebrates

Has the “Tully monster” mystery finally been solved after 65 years?

Possibly what the Tully monster looked like while alive:

Show transcript:

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

This week we’re going to learn about an ancient creature surrounded by mystery. When I was working on last week’s updates episode, I found some new information about it and intended to include it as an update. Then I realized I was referencing a Patreon episode, which I also reworked into a chapter of the Beyond Bigfoot & Nessie book. So instead, I included the new information in this episode all about the Tully monster.

In 1955, an amateur fossil collector named Francis Tully discovered a really weird fossil. This was in one particular area of Illinois in the United States, roughly in the middle of North America. The fossil was about six inches long, or 15 cm, and Tully thought it resembled a tiny torpedo.

He took the fossil to the Field Museum of Natural History in Chicago in hopes that somebody could tell him what his fossil was. The paleontologists he showed it to had no idea what it was or even what it might be related to. It was described in 1966 and given the name Tullimonstrum, which means Mr. Tully’s monster, which is pretty much what everyone was calling it already.

300 million years ago, in what is now the state of Illinois, a strange animal lived in the shallow sea that covered part of the area. The land that bordered this sea was swampy, with many rivers emptying into the ocean. These river waters carried dead plant materials and mud, which settled to the bottom of the ocean. When an animal died, assuming it wasn’t eaten by something else, its body sank into this soft muddy mess. The bacteria in the mud produced carbon dioxide that combined with iron that was also present in the mud, which formed a mineral called siderite that encased the dead animal. This slowed decay long enough that an impression of the body formed in the mud, and as the centuries passed and the mud became stone, the fossilized body impression was surrounded by a protective ironstone nodule. That’s why we know about the soft-bodied animals from this area, even though soft-bodied animals rarely leave fossil evidence.

So what did this weird animal look like?

The Tully monster was shaped sort of like a slug or a leech, and it had a segmented body. Its eyes were on stalks that jutted out sideways, although the stalks were more of a horizontal bar that grew across the top of the head. The tail end had two vertical fins, which argues that the Tully monster was probably a good swimmer. But at the front of its body it had a long, thin, jointed proboscis that ended in claws or pincers lined with eight tiny tooth-like structures.

It’s easy to assume that the pincers acted as jaws and therefore the proboscis was a mouth on a jointed stalk, but we really don’t know. The Tully monster may have used its proboscis to probe for food in the mud at the bottom of the sea, but because the proboscis had a joint, it probably couldn’t act as a sort of straw. The pincers may have grabbed tiny prey and conveyed it to a mouth that hasn’t been preserved on the specimens we have.

The Tully monster resembles nothing else known, and is so bizarre that researchers aren’t sure where to place it taxonomically. And it wasn’t rare. Paleontologists have since found lots of Tully monster fossils in the Illinois fossil beds, known as the Mazon Creek formation. The Mazon Creek formation is also the source of highly detailed fossils of hundreds of other plant and animal species, including some that have never been found anywhere else.

Scientists have suggested any number of animal groups that the Tully monster might belong to. It might be a type of arthropod, a mollusk, a segmented worm…or it might be a vertebrate. The tiny tooth-like structures in the pincers have been analyzed and some researchers think they were more similar to keratin than chitin. Keratin is a vertebrate protein while chitin is an invertebrate protein.

In 2016 a study argued that pigments in the eyes are arranged the same way as they are in vertebrates, which meant the Tully monster might have been a vertebrate. The problem is that some invertebrates also have these same pigment arrangements, notably cephalopods like octopuses. A 2019 study also looked at the chemical makeup of the fossil eyes, this time with even more advanced equipment—specifically, a synchrotron radiation lightsource, which is a type of particle accelerator. It sounds so science-y. This study suggested that the Tully monster’s eyes had a different chemical makeup than the vertebrates found in the same fossil beds, which means the Tully monster probably wasn’t a vertebrate after all. But it also didn’t match up with known invertebrates from the same fossil beds.

Of course, it might be a deuterostome. The animals in this superphylum develop a nerve cord at some stage of life, usually as an embryo, but may not retain it into adulthood. This includes echinoderms such as sea stars and sea urchins, tunicates like sea squirts, and possibly acorn worms although some scientists disagree. All vertebrates are also members of the superphylum too.

One suggestion is that the Tully monster is related to a type of animal called a conodont. Technically the term conodont refers to its teeth, with the animal itself known as conodontophora, but conodont is easier to say. We know very little about the conodont, since almost the only fossils we have of it are the tiny teeth. We also have eleven body impressions, so we know it was long and skinny like an eel and grew up to 20 inches long, or 50 cm. We also know it had large eyes, a notochord (or primitive spine), and fins on the tail end.

Conodont teeth first appear in the fossil record during the Cambrian, some 525 million years ago. They disappear entirely from the fossil record about 200 million years ago during the Triassic-Jurassic extinction event. But during those 300-some million years they were around, they left a whole lot of tiny fossil teeth, so many that they’re considered an index fossil, which helps scientists determine how old a particular strata of rock is.

When I say tiny teeth, I mean tiny—they’re microfossils usually measured in micrometers, although some of the larger ones were as much as 6 mm long. But they weren’t teeth like modern animal teeth, and the mouth wasn’t like anything we know today.

The conodont’s mouth is called a feeding apparatus by scientists, and it’s very different from what most of us think of as a mouth. This was long before jawed animals evolved some 400 million years ago, and the conodont’s teeth are technically known as conodont elements since they’re not really teeth. There were three types of the conodont elements, meaning they had different shapes and probably different functions.

Some species of conodont may have used the elements to crush prey, but they probably weren’t very strong swimmers so may have mostly eaten very small animals. Some researchers even suggest the conodont used the elements to filter plankton from the water, while others think the conodont might have been parasitic on larger animals, like the sea lamprey is. Conodonts were probably related to hagfish and lampreys and may have looked similar, although not everyone agrees with this classification. Some researchers even think conodonts might have been invertebrates.

Another possibility is that the Tully monster was related to Anomalocarids, which you may remember from the Cambrian explosion episode. Anomalocaris and its relations were arthropods that resemble nothing else alive. It had eyes on stalks, clawed appendages that grew from its front near the mouth, and the rear of its body was segmented with tail fins. Another Cambrian arthropod, Opabinia, had a single flexible feeding proboscis with claws at the end, five eyes on stalks, and a segmented body, so the Tully monster may have been related to it. But we don’t have anything definitive yet one way or another as to what it was related to.

The most recent study on whether the Tully monster was an invertebrate or a vertebrate was published in early 2023 in the journal Nature. The study used high-resolution 3D scanning to examine 153 Tully monster specimens. The scientists determined that the tooth-like structures at the end of the proboscis don’t appear to be keratin, and the Tully monster has segmentation in its head, which is not something found in vertebrates. These and other findings mean that as of now, it looks like the Tully monster was an invertebrate.

However, we still have no idea what kind of invertebrate it might have been. The 2023 study suggests it was either a non-vertebrate chordate or a protostome. Non-vertebrate chordates include hagfish and tunicates, while protostomes include a whole lot of invertebrates, including insects, worms, and mollusks.

The reason all this is important is because there’s a whole lot we don’t know yet about how jawed animals evolved from jawless fish. If the Tully monster really was a vertebrate, it would give us new information about jawless animals. But part of the reason it’s hard to determine where the Tully monster should be placed taxonomically is because of how incredibly weird it is, and that’s exciting too.

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 338: Updates 6 and an Arboreal Clam!?!

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This week we have our annual updates and corrections episode, and at the end of the episode we’ll learn about a really weird clam I didn’t even think was real at first.

Thanks to Simon and Anbo for sending in some corrections!

Further reading:

Lessons on transparency from the glass frog

Hidden, never-before-seen penguin colony spotted from space

Rare wild asses spotted near China-Mongolia border

Aye-Ayes Use Their Elongated Fingers to Pick Their Nose

Homo sapiens likely arose from multiple closely related populations

Scientists Find Earliest Evidence of Hominins Cooking with Fire

153,000-Year-Old Homo sapiens Footprint Discovered in South Africa

Newly-Discovered Tyrannosaur Species Fills Gap in Lineage Leading to Tyrannosaurus rex

Earth’s First Vertebrate Superpredator Was Shorter and Stouter than Previously Thought

252-Million-Year-Old Insect-Damaged Leaves Reveal First Fossil Evidence of Foliar Nyctinasty

The other paleo diet: Rare discovery of dinosaur remains preserved with its last meal

The Mongolian wild ass:

The giant barb fish [photo from this site]:

Enigmonia aenigmatica, AKA the mangrove jingle shell, on a leaf:

Show transcript:

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

This week is our annual updates and corrections episode, but we’ll also learn about the mangrove jingle shell, a clam that lives in TREES. A quick reminder that this isn’t a comprehensive updates episode, because that would take 100 years to prepare and would be hours and hours long, and I don’t have that kind of time. It’s just whatever caught my eye during the last year that I thought was interesting.

First, we have a few corrections. Anbo emailed me recently with a correction from episode 158. No one else caught this, as far as I can remember. In that episode I said that geckos don’t have eyelids, and for the most part that’s true. But there’s one family of geckos that does have eyelids, Eublepharidae. This includes the leopard gecko, and that lines up with Anbo’s report of having a pet leopard gecko who definitely blinked its eyes. This family of geckos are sometimes even called eyelid geckos. Also, Anbo, I apologize for mispronouncing your name in last week’s episode about shrimp.

After episode 307, about the coquí and glass frogs, Simon pointed out that Hawaii doesn’t actually have any native frogs or amphibians at all. It doesn’t even have any native reptiles unless you count sea snakes and sea turtles. The coqui frog is an invasive species introduced by humans, and because it has no natural predators in Hawaii it has disrupted the native ecosystem in many places, eating all the available insects. Three of the Hawaiian islands remain free of the frogs, and conservationists are working to keep it that way while also figuring out ways to get them off of the other islands. Simon also sent me the chapter of the book he’s working on that talks about island frogs, and I hope the book is published soon because it is so much fun to read!

Speaking of frogs, one week after episode 307, an article about yet another way the glass frog is able to hide from predators was published in Science. When a glass frog is active, its blood is normal, but when it settles down to sleep, the red blood cells in its blood collect in its liver. The liver is covered with teensy guanine crystals that scatter light, which hides the red color from view. That makes the frog look even more green and leaf-like!

We’ve talked about penguins in several episodes, and emperor penguins specifically in episode 78. The emperor penguin lives in Antarctica and is threatened by climate change as the earth’s climate warms and more and more ice melts. We actually don’t know all that much about the emperor penguin because it lives in a part of the world that’s difficult for humans to explore. In December 2022, a geologist named Peter Fretwell was studying satellite photos of Antarctica to measure the loss of sea ice when he noticed something strange. Some of the ice had brown stains.

Dr Fretwell knew exactly what those stains were: emperor penguin poop. When he obtained higher-resolution photos, he was able to zoom in and see the emperor penguins themselves. But this wasn’t a colony he knew about. It was a completely undiscovered colony.

In episode 292 we talked about a mystery animal called the kunga, and in that episode we also talked a lot about domestic and wild donkeys. We didn’t cover the Mongolian wild ass in that one, but it’s very similar to wild asses in other parts of the world. It’s also called the Mongolian khulan. It used to be a lot more widespread than it is now, but these days it only lives in southern Mongolia and northern China. It’s increasingly threatened by habitat loss, climate change, and poaching, even though it’s a protected animal in both Mongolia and China.

In February of 2023, a small herd of eight Mongolian wild asses were spotted along the border of both countries, in a nature reserve. A local herdsman noticed them first and put hay out to make sure the donkeys had enough to eat. The nature reserve has a water station for wild animals to drink from, and has better grazing these days after grassland ecology measures were put into place several years ago.

In episode 233 we talked about the aye-aye of Madagascar, which has weird elongated fingers. Its middle finger is even longer and much thinner than the others, which it uses to pull invertebrates from under tree bark and other tiny crevices. Well, in October of 2022 researchers studying aye-ayes started documenting another use for this long thin finger. The aye-ayes used it to pick their noses. It wasn’t just one aye-aye that wasn’t taught good manners, it was widespread. And I hope you’re not snacking while I tell you this, the aye-aye would then lick its finger clean. Yeah. But the weirdest thing is that the aye-aye’s thin finger is so long that it can potentially reach right through the nose right down into the aye-aye’s throat.

It’s pretty funny and gross, but wondering why some animals pick their noses is a valid scientific question. A lot of apes and monkeys pick their noses, as do humans (not that we admit it most of the time), and now we know aye-ayes do too. The aye-aye is a type of lemur and therefore a primate, but it’s not very closely related to apes and monkeys. Is this just a primate habit or is it only seen in primates because we have fingers that fit into our nostrils? Would all mammals pick their nose if they had fingers that would fit up in there? Sometimes if you have a dried snot stuck in your nose, it’s uncomfortable, but picking your nose can also spread germs if your fingers are dirty. So it’s still a mystery why the aye-aye does it.

A recent article in Nature suggests that Homo sapiens, our own species, may have evolved not from a single species of early human but from the hybridization of several early human species. We already know that humans interbred with Neandertals and Denisovans, but we’re talking about hybridization that happened long before that between hominin species that were even more closely related.

The most genetically diverse population of humans alive today are the Nama people who live in southern Africa, and the reason they’re so genetically diverse is that their ancestors have lived in that part of Africa since humans evolved. Populations that migrated away from the area, whether to different parts of Africa or other parts of the world, had a smaller gene pool to draw from as they moved farther and farther away from where most humans lived.

Now, a new genetic study of modern Nama people has looked at changes in DNA that indicate the ancestry of all humans. The results suggest that before about 120,000 to 135,000 years ago, there was more than one species of human, but that they were all extremely closely related. Since these were all humans, even though they were ancient humans and slightly different genetically, it’s probable that the different groups traded with each other or hunted together, and undoubtedly people from different groups fell in love just the way people do today. Over the generations, all this interbreeding resulted in one genetically stable population of Homo sapiens that has led to modern humans that you see everywhere today. To be clear, as I always point out, no matter where people live or what they look like, all people alive today are genetically human, with only minor variations in our genetic makeup. It’s just that the Nama people still retain a lot of clues about our very distant ancestry that other populations no longer show.

To remind everyone how awesome out distant ancestors were, here’s one new finding of how ancient humans lived. We know that early humans and Neandertals were cooking their food at least 170,000 years ago, but recently archaeologists found the remains of an early hominin settlement in what is now Israel where people were cooking fish 780,000 years ago. There were different species of fish remains found along with the remains of cooking fires, and some of the fish are ones that have since gone extinct. One was a carp-like fish called the giant barb that could grow 10 feet long, or 3 meters.

In other ancient human news, the oldest human footprint was discovered recently in South Africa. You’d think that we would have lots of ancient human footprints, but that’s actually not the case when it comes to footprints more than 50,000 years old. There are only 14 human footprints older than that, although there are older footprints found made by ancestors of modern humans. The newly discovered footprint dates to 153,000 years ago.

It wouldn’t be an updates episode without mentioning Tyrannosaurus rex. In late 2022 a newly discovered tyrannosaurid was described. It lived about 76 million years ago in what is now Montana in the United States, and while it wasn’t as big as T. rex, it was still plenty big. It probably stood about seven feet high at the hip, or a little over 2 meters, and might have been 30 feet long, or 9 meters. It probably wasn’t a direct ancestor of T. rex, just a closely related cousin, although we don’t know for sure yet. It’s called Daspletosaurus wilsoni and it shows some traits that are found in older Tyrannosaur relations but some that were more modern at the time.

Dunkleosteus is one of a number of huge armored fish that lived in the Devonian period, about 360 million years ago. We talked about it way back in episode 33, back in 2017, and at that time paleontologists thought Dunkleosteus terrelli might have grown over 30 feet long, or 9 meters. It had a heavily armored head but its skeleton was made of cartilage like a shark’s, and cartilage doesn’t generally fossilize, so while we have well-preserved head plates, we don’t know much about the rest of its body.

With the publication in early 2023 of a new study about dunkleosteus’s size, we’re pretty sure that 30 feet was a huge overestimation. It was probably less than half that length, maybe up to 13 feet long, or almost 4 meters. Previous size estimates used sharks as size models, but dunkleosteus would have been shaped more like a tuna. Maybe you think of tuna as a fish that makes a yummy sandwich, but tuna are actually huge and powerful predators that can grow up to 10 feet long, or 3 meters. Tuna are also much heavier and bigger around than sharks, and that was probably true for dunkleosteus too. The study’s lead even says dunkleosteus was built like a wrecking ball, and points out that it was probably the biggest animal alive at the time. I’m also happy to report that people have started calling it chunk-a-dunk.

We talked about trace fossils in episode 103. Scientists can learn a lot from trace fossils, which is a broad term that encompasses things like footprints, burrows, poops, and even toothmarks. Recently a new study looked at insect damage on leaves dating back 252 million years and learned something really interesting. Some modern plants fold up their leaves at night, called foliar nyctinasty, which is sometimes referred to as sleeping. The plant isn’t asleep in the same way that an animal falls asleep, but “sleeping” is a lot easier to say than foliar nyctinasty. Researchers didn’t know if folding leaves at night was a modern trait or if it’s been around for a long time in some plants. Lots of fossilized leaves are folded over, but we can’t tell if that happened after the leaf fell off its plant or after the plant died.

Then a team of paleontologists from China and Sweden studying insect damage to leaves noticed that some leaves had identical damage on both sides, exactly as though the leaf had been folded and an insect had eaten right through it. That’s something that happens in modern plants when they’re asleep and the leaves are folded closed.

The team looked at fossilized leaves from a group of trees called gigantopterids, which lived between 300 and 250 million years ago. They’re extinct now but were advanced plants at the time, some of the earliest flowering plants. They also happen to have really big leaves that often show insect damage. The team determined that the trees probably did fold their leaves while sleeping.

In episode 151 we talked about fossils found with other fossils inside them. Basically it’s when a fossil is so well preserved that the contents of the dead animal’s digestive system are preserved. This is incredibly rare, naturally, but recently a new one was discovered.

Microraptor was a dinosaur that was only about the size of a modern crow, one of the smallest dinosaurs, and it probably looked a lot like a weird bird. It could fly, although probably not very well compared to modern birds, and in addition to front legs that were modified to form wings, its back legs also had long feathers to form a second set of wings.

Several exceptionally well preserved Microraptor fossils have been discovered in China, some of them with parts of their last meals in the stomach area, including a fish, a bird, and a lizard, so we knew they were generalist predators when it came to what they would eat. Now we have another Microraptor fossil with the fossilized foot of a mammal in the place where the dinosaur’s stomach once was. So we know that Microraptor ate mammals as well as anything else it could catch, although we don’t know what kind of mammal this particular leg belonged to. It may be a new species.

Let’s finish with the mangrove jingle shell. I’ve had it on the list for a long time with a lot of question marks after it. It’s a clam that lives in trees, and I actually thought it might be an animal made up for an April fool’s joke. But no, it’s a real clam that really does live in trees.

The mangrove jingle shell lives on the mangrove tree. Mangroves are adapted to live in brackish water, meaning a mixture of fresh and salt water, or even fully salt water. They mostly live in tropical or subtropical climates along coasts, and especially like to live in waterways where there’s a tide. The tide brings freshly oxygenated water to its roots. A mangrove tree needs oxygen to survive just like animals do, but it has trouble getting enough through its roots when they’re underwater. Its root system is extensive and complicated, with special types of roots that help it stay upright when the tide goes out and special roots called pneumatophores, which stick up above the water or soil and act as straws, allowing the tree to absorb plenty of oxygen from the air even when the rest of the root system is underwater. These pneumatophores are sometimes called knees, but different species of mangrove have different pneumatophore shapes and sizes.

One interesting thing about the mangrove tree is that its seeds actually sprout while they’re still attached to the parent tree. When it’s big enough, the seedling drops off its tree into the water and can float around for a long time before it finds somewhere to root. If can even survive drying out for a year or more.

The mangrove jingle shell clam lives in tropical areas of the Indo-Pacific Ocean, and is found throughout much of coastal southeast Asia all the way down to parts of Australia. It grows a little over one inch long, or 3 cm, and like other clams it finds a place to anchor itself so that water flows past it all the time and it can filter tiny food particles from the water. It especially likes intertidal areas, which happens to be the same area that mangroves especially like.

Larval jingle shells can swim, but they need to find somewhere solid to anchor themselves as they mature. When a larva finds a mangrove root, it attaches itself and grows a domed shell. If it finds a mangrove leaf, since mangrove branches often trail into the water, it attaches itself to the underside and grows a flatter shell. Clams attached to leaves are lighter in color than clams attached to roots or branches. Fortunately, the mangrove is an evergreen tree that doesn’t drop its leaves every year.

So there you have it. Arboreal clams! Not a hoax or an April fool’s joke.

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