Strange Animals Podcast Podcast Por Katherine Shaw arte de portada

Strange Animals Podcast

Strange Animals Podcast

De: Katherine Shaw
Escúchala gratis

A podcast about living, extinct, and imaginary animals! Ciencia Ciencias Biológicas Historia Natural Naturaleza y Ecología
Episodios
  • Episode 481: The Pictish Beast

    Episode 481: The Pictish Beast
    Apr 20 2026
    This week we’ll learn about a long-forgotten animal of folklore! Further reading: https://www.anomalist.com/ The Pictish Beast: A dragonesque brooch: Show transcript: Welcome to Strange Animals Podcast. I’m your host, Kate Shaw. The Picts were a population of Celtic people who lived in what is now northern and eastern Scotland between around the third and tenth centuries. They had their own language, which is lost to time except for a handful of place-names, and made beautiful rock carvings and metal art, but we know very little about them even though their descendants still live in Scotland today. Vikings conquered the area, which led to upheavals among the many small kingdoms, so that by the 11th century, all the Picts had been absorbed into the greater Scottish population and had completely forgotten their heritage. The carvings are what we’re interested in today. The Picts carved lots of different animals along with more abstract designs, and although the carvings are often stylized, we generally know what animals they represent. There are roe deer, red deer, dogs, boars, horses, cattle, salmon and other fish, otters, eagles, and more. But there’s one animal no one can identify, referred to as the Pictish Beast. The Pictish Beast isn’t rare, either. One estimate is that 40% of all the animal carvings depict the Pictish beast, so it was obviously important. That makes it even more baffling that we don’t know what it is. There are variations, but generally the Pictish Beast has a long snout or beak with a line showing that the mouth was long too. There’s a horn-like design that emerges from the top or rear of the head and bends backwards, with a little curl at the end. The body looks superficially doglike, with a little curled dog tail, but the legs don’t resemble any real animal’s legs. They appear stiff, not jointed, and often bend backwards slightly. The feet are simplified designs that curl backwards in a little spiral. The head is usually bent as though it’s staring downward. It has no ears or nostrils. Naturally there are lots of theories as to what the Pictish Beast represents. One theory is that it’s not a real animal at all but a type of dragon. Specifically, some experts consider it to be a version of a design called dragonesque brooches. These were pieces of jewelry made throughout southern Scotland and northern England during the first and second century. They were roughly S-shaped, made to look like a double-headed animal with a curly nose and distinctive round ears. Instead of dragons, though, the dragonesque brooch animals were probably actually stylized rabbits or hares. They were also popular at least 200 years before the Pictish Beast started being carved so often, so while there is a superficial resemblance, it’s not a perfect match by any means. Then again, there is one stone, called the Mortlach 2 stone, that depicts both a Pictish Beast and what seems to be a simplified version of the dragonesque brooch design. Some researchers think the artist was depicting what was at the time the modern Pictish Beast and the old-timey dragonesque brooch that inspired it. One suggestion is that the beast was inspired by the dragonesque brooch, but isn’t otherwise related. Remember that the brooches would have been considered super old at the time and were probably rare even then as a result. Think about how many pieces of jewelry you own that are several hundred years old. If an artist saw one of the brooches and thought it looked neat, but had no idea what it was supposed to represent, they might have recreated it with details that made sense to them, trying to imitate what they saw. But that doesn’t explain why the design became so incredibly popular. There are other suggestions, of course. Sometimes the beast is depicted vertically, which makes it look superficially like a weird seahorse. Seahorses do live off the coast of Scotland, but that doesn’t explain why the Pictish Beast has large legs and such a little tail. Most of the time the beast is shown horizontally, legs down. Sometimes the beast is referred to as an elephant, but knowledge of elephants in the British Isles over a thousand years ago was unlikely at best. And the beast has zero resemblance to an elephant so I don’t know who came up with that idea but let’s just set it aside and move on. Because of the horn-like appendage on its head, some people suggest the beast might depict a stylized deer. That’s more likely than an elephant but Pictish carvings of deer exist and are obviously deer. That doesn’t mean the beast couldn’t have started out as a deer that took on more and more stylized and exaggerated components until no one remembered it was actually a deer, but that could be said about any animal, not just a deer. Another suggestion is that it’s supposed to be a water animal of folklore, possibly a kelpie, or water horse, or a water bull. Both creatures were supposed to lure ...
    Más Menos
    9 m
  • Episode 480: Old, Old Life

    Episode 480: Old, Old Life
    Apr 13 2026
    Let’s learn about some of the oldest life ever discovered! Further reading: Microbiologists Find Living Microbes in 2-Billion-Year-Old Rock Chart of life extended by nearly 1.5 billion years Show transcript: Back in episode 168 we talked about the longest-lived organisms known, and finished the episode by discussing endoliths. I’ll quote from that episode as a refresher. An endolith isn’t a particular animal or even a group of related animals. An endolith is an organism that lives inside a rock or other rock-like substance, such as coral. Some are fungi, some lichens, some amoebas, some bacteria, and various other organisms, many of them single-celled and all of them very small if not microscopic. Some live in tiny cracks in a rock, some live in porous rocks that have space between grains of mineral, some bore into the rock. Many are considered extremophiles, living in rocks inside Antarctic permafrost, at the tops of the highest mountains, in the abyssal depths of the oceans, and at least two miles, or 3 km, below the earth’s surface. Various endoliths eat different minerals, including potassium, sulfur, and iron. Some endoliths even eat other endoliths. We don’t know a whole lot about them, but studies of endoliths found in soil deep beneath the ocean’s floor suggest that they grow extremely slowly. Like, from one generation to the next could be as long as 10,000 years, with the oldest endoliths potentially being millions of years old—even as old as the sediment itself, which dates to 100 million years old. That episode was almost five years ago, and in October of 2024 some new information was published. The study mentions the 100-million-year-old limit known so far, where living microorganisms were indeed discovered in geological layers below the ocean floor. But what they found was even older. The scientific team analyzed rock samples from northeastern South Africa, specifically rock that formed when magma cooled below the surface of the earth. It’s called the Bushveld Igneous Complex and is very large, very old, and very stable. The team drilled core samples of the rock from 50 feet down, or 15 meters, and cut it into thin slices to examine. To their surprise, they discovered microbial life in the rock’s cracks, which were sealed tightly with clay so that nothing should be able to get in or out of the rocks. To be sure the microbes hadn’t been introduced during the drilling or preparing process, they used infrared spectroscopy to compare the proteins in the microbes with the proteins caught in the clay. They matched, meaning the microbes had been there as long as the clay had been there, which was basically almost as long as the rocks had been in place. They were also able to verify that yes, the microbes were definitely alive. So, how old are the rocks? TWO BILLION YEARS OLD. Billion with a B! While the individual microbes probably aren’t actually that old, the population of microbes has been living in those cracks far within the rock for two billion years. Scientists are excited to learn more about them, because by studying organisms that have been separated from all other life for that long, they can learn about how early life on earth evolved. Even more exciting, at least if you’re me, NASA’s Perseverance rover on Mars is going to be bringing some rocks back to earth that are about 2 billion years old. Scientists are really excited to see if there is any evidence for microbial life inside the Martian rocks! I know I won’t live long enough to see the first macrobial life from another planet, but I really hope I’m alive when we discover the first microbial life. I don’t think life is rare on other planets, it’s just that the distances are so enormous that getting to another planet and sending information back home is an almost insurmountable problem right now. The closest planets to us are Mars and Venus, and these days Mars just doesn’t seem like it would be very habitable for anything but microbes. But microbes can live just about anywhere! Also in 2024, a team from Virginia Tech has put together a chart marking when various life forms started appearing in the fossil record and when they also stopped appearing in the fossil record. Versions of this chart of life have been made before, but they typically only go back to about half a billion years ago, around the time of the Cambrian. Before that, life was much less likely to fossilize, or the rocks containing the fossils have been worn away. The team gathered fossil data from scientists and institutions around the world and compiled it into a chart of life that extends back two billion years. The farther back you look, the less changes there are among the type and differences in species. There’s even a huge stretch of time called the boring billion where things really weren’t changing much at all, at least not according to the fossil record we have available. It wasn’t until the earth’s climate became...
    Más Menos
    8 m
  • Episode 479: Metal Animals

    Episode 479: Metal Animals
    Apr 6 2026
    Further reading: Beavers Have Metal Teeth Show transcript: Welcome to Strange Animals Podcast. I’m your host, Kate Shaw. Let’s find out about some animals that incorporate metal into their bodies in more than just trace amounts. We’ll start with the scaly-foot gastropod, a deep-sea snail. It lives around hydrothermal vents in the Indian Ocean, about 1 and ¾ miles below the surface, or about 2800 meters. The water around these vents, referred to as black smokers, can be more than 350 degrees Celsius. That’s 660 degrees F, if you even need to know that that’s too hot to live. The scaly-foot gastropod was discovered in 2001 but not formally described until 2015. The color of its shell varies from almost black to golden, depending on which population it’s from, and it grows to almost 2 inches long, or nearly 5 cm. It doesn’t have eyes, and while it does have a small mouth, it doesn’t use it for eating. Instead, the snail contains symbiotic bacteria in a gland in its esophagus. The bacteria convert toxic hydrogen sulfide from the water around the hydrothermal vents into energy the snail uses to live. It’s a process called chemosynthesis. In return, the bacteria get a safe place to live. The snail’s shell contains an outer layer made of iron sulfides. Not only that, the bottom of the snail’s foot is covered with sclerites, or spiky scales, that are also mineralized with iron sulfides. While the snail can’t pull itself entirely into its shell, if something attacks it, the bottom of its foot is heavily armored and its shell is similarly tough. Researchers are studying the scaly-foot gastropod’s shell to possibly make a similar composite material for protective gear and other items. The inner layer of the shell is made of a type of calcium carbonate, common in mollusk shells and some corals. The middle layer of the shell is regular snail shell material, organic periostracum, which helps dissipate heat as well as pressure from squeezing attacks, like from crab claws. And the outer layer, of course, is iron sulfides like pyrite and greigite. Oh, and since greigite is magnetic, the snails stick to magnets. The scaly-foot gastropod is the only animal known that incorporates iron sulfide into its skeleton, but other animals use metals in their teeth. Some spiders have tiny amounts of zinc in the tips of their fangs. Some mollusks have small amounts of iron in the teeth of their radulas—you know, the tongue-like structure used to scrape food off rocks. The teeth of the limpet, a type of mollusk, may be one of the strongest structures in the world. It contains goethite nanofibers, and goethite is a type of iron. The teeth of beavers and some other rodents contain iron in the enamel coating. This makes the teeth much harder, although the amount of iron is quite small and unstructured. Most other mammals, including humans, have magnesium in tooth enamel instead of iron. The iron content makes the teeth look orange because of rust. Bloodworms are disgusting horrible worms that my uncle used to fish with when we visited the beach when I was a kid. I was scared of the bloodworms, which irritated my uncle, because I was very vocal about hating the worms and he wasn’t catching any fish with them. Bloodworms live in the sand or silt of shallow water, usually in the ocean but since they can tolerate low salt levels, they may also live farther inland in canals and inlets. Some species can grow nearly 15 inches long, or 37 cm. They’re usually pink or reddish in color with bristles along the body and four little antennae on the head. But the reason I’m talking about them here is that their teeth are reinforced with copper that makes them nearly as hard as teeth coated with enamel. Its jaw also contains copper ions. Copper is toxic to most animals, which may be the source of the bloodworm’s venom. That’s right: horrible worms are also venomous. Another invertebrate that incorporates metal in its body is the parasitic fig wasp. Fig wasps are interesting and there are a lot of them. Figs are pollinated by fig wasps that are not parasitic. The fig flower has a bulb at its base containing a tiny hole. The pollinating fig wasp crawls into the hole, pollinating the flower at the same time, and lays her eggs inside the bulb. She then dies. As the fig developes, the wasp eggs hatch into larvae and then develop into adult wasps. Males mate with females, then chew a hole out of the fig, but only the female wasps have wings, so the males remain and die. As the fig ripens, it actually digests the dead wasps, and—and this is important to those of us who really like figs—leaves no bits of dead wasp inside the fig. So that’s how the pollinating fig wasps work. It’s a symbiotic relationship between the fig tree and the wasp. But the parasitic fig wasp is different. The female has a long ovipositor, which it uses to drill into developing figs and into the pollinating fig wasp larvae. When its eggs ...
    Más Menos
    8 m
Todas las estrellas
Más relevante
Strange Animals Podcast is always entertaining and informative, fantastic for families. Highly recommended for homeschooling, too.

Always lovely

Se ha producido un error. Vuelve a intentarlo dentro de unos minutos.
I loved it very entertaining would recommend if you love animal and want to learn more.

Interesting

Se ha producido un error. Vuelve a intentarlo dentro de unos minutos.