Animals

Our random animal facts are a both fun and a little bit weird but they will keep you entertained for days!

WTF Fun Fact 12806 – Greenland Sharks Are Blind

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There are an awful lot of people who want to know “Are Greenland sharks blind?” That’s probably because any time you hear about the species Somniosus microcephalus it’s in relation to the parasite that lives in their eyes.

So, ARE Greenland sharks blind?

While we don’t know exactly what percent of Greenland sharks are blind, scientists do believe that many, if not most, at at least partially blind because of the parasites.

And these sharks already had a bad reputation to begin with. According to Oceana (cited below), “Like many other polar fish, their flesh contains high concentrations of natural antifreeze. According to a handful of reports, Greenland shark meat is so toxic it can make sled dogs vomit and ravens act drunk.”

But people aren’t big shark fans anyway, so their toxicity is very likely overstated. Oceana continues: “But this is likely a case of false advertising. The antifreeze compound in their tissue is toxic, but only mildly — an adult would have to eat around 20 kilograms (44 pounds) of shark at one sitting just to feel woozy.”

Ok, we’re blaming you if you eat that much shark meat.

Anyway, back to the blindness.

The sharks tend to be seen as ungraceful (the word “bumbling” has been used to describe them). But they’re born with small eyes to begin with and then lose their vision due to the parasitic crustaceans which measure just 3-centimeter-long – Ommatokoita elongata. Oceana states that “Each eye usually hosts one adult female along with several larvae. They nibble away at the shark’s cornea tissue, destroying its vision in the process.”

As a result, the sharks see in a haze and can only sense patterns of darkness and light.

However, they have a keen sense of smell, so they don’t have too much trouble grabbing dinner.

And dinner for this shark, which is a scavenger, is rotting meat.

Why do these sharks get such a bad rap?

Aside from looking kind of gross with the whole “crustacean feasting on their eyes” thing going on and harboring toxic chemicals in their skin, the sharks have a reputation as one of the “laziest” creatures.

Frankly, we’d prefer a lazy shark to a really energetic go-getter!

They get this reputation in part because the Greenland shark isn’t very fast (not surprising since they’re partially blind) as well as one of the world’s biggest sharks (reaching 24 feet long).

Somniosus microcephalus moseys along at around 1.5 miles an hour. But that’s also in part because of the frigid waters they live in. They are perfectly happy to live their lives in water as cold as 29 degrees F.

– WTF fun facts

Source: “Maligned as Lazy and Toxic, Greenland Sharks Are Smarter than You Think” — Oceana

WTF Fun Fact 12805 – Hummingbirds Can Fly Backward

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“Can hummingbirds fly backwards?” is a fairly common Google query when it comes to these little creatures. And we have to admit, we never really thought about a bird’s ability to fly in different directions.

But the answer is yes. And, in fact, they’re the only birds that have the ability to fly backwards for any significant length of time. Flycatchers, warblers, and herons can move backwards, but only as a defensive maneuver.

Hummingbird flying skills – backward, forward, side to side

According to the Audobon Society (cited below), “The hummingbird is the only bird that can truly hover. It manages this by flapping its wings 20 to 80 times a second. It can fly straight up and down. Backwards and forwards. Or upside down. And up to 75 miles an hour. But don’t worry, it won’t run into you. This bird can slow down from 25 miles an hour to a dead stop in a space no longer than your index finger.”

It’s the bird’s unique muscle structure in their wings that allows them to fly this way. For example, they have a rotator cuff that allows them to move their wings in a figure-8 pattern.

The trade-off is that they have very weak legs. They can only hop short distances – and not very well. So they fly just about everywhere.

Fun facts about hummingbirds

Some other interesting things about hummingbirds that contribute to their uniqueness include:

  • Their ability to beat their wings up to 200 times per second. (This is especially the case in the smallest hummingbird species with the smallest wingspans – they need to move fast to stay aloft.)
  • The average speed of a hummingbird is 30 mph. That’s part of the reason they’re so hard to capture on camera.
  • The average hummingbird can consume twice its weight in sugar, which is needs to have the energy to power its flight.
  • Hummingbirds have around 1000 to 1500 feathers. And while that may sound like a lot, it’s significantly less than other birds. And that makes them more lightweight (a ruby throated hummingbird, for example, weighs just three grams).
  • Hummingbirds migrate from the east coast of the US to Central America each year, 1300-mile journey. It’s believed they can fly up to 500 miles in one day.

If you see a chubby hummingbird, it’s likely ready to begin its migration journey. The little creatures gain around 20 to 40% more body fat before they begin their annual migrations.

Since they live for around 5 years (though a few have been known to live to 11 or 12 years), they make the long trip more than a few times in their lives.

– WTF fun facts

Source: “Hummingbird Flight Is Like Nothing Else in the Bird World” — Audobon Society

WTF Fun Fact 12804 – Are Crocodiles Immortal?

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No less a scientist than world-renowned physicist Dr. Michio Kaku has pondered the question “Are crocodiles immortal?” Of course, they’re not. But they’re still fascinating in terms of their lifespan – or lack thereof.

If crocodiles aren’t immortal, what’s the deal?

Crocodiles don’t have a formally recognized lifespan. In fact, they tend to outlive our interest in trying to figure it out at any given time. They can certainly live to be over 100, and they’re just as vigorous at that age as they are when they’re younger.

The only real difference is that they get bigger. But getting bigger can be a problem – it means they need to eat more and are at risk for starvation. And while they might not age biologically, the longer you live the greater your chances are of being killed by disease or accident. And those are the three main killers of crocodiles.

Not older, just bigger

According to an article by VICE (cited below) on crocodiles’ supposed immortality: “This is the reason we don’t happen to see crocodiles the size of Boeing 747s in the wild. Dr. Kaku also claims the standard 70-year crocodile lifespan defined by textbooks is basically because ‘zookeepers die at 70.'”

After talking to Billy Collett of the Australian Reptile Park, VICE added: “Queensland is actually home to the world’s largest captive crocodile, Cassius. Measuring in at around five and a half metres long, he’s estimated to be more than 110 years old. When I asked Billy what he thought of the proposition that saltwater crocodiles could not biologically die, he was skeptical. He did concede though that there’s not a lot of research around the aging process for crocodiles. In captivity, stress appears to stem their lifespan. In the wild, most crocodiles are relatively young because the market for handbags in the early 20th century wiped out anything older than 100 years.” – WTF fun facts

Source: “Old Crocodiles Never Die, They Just Keep Getting Bigger” — VICE

WTF Fun Fact 12803 – Real-Life Lassie

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Has your dog ever done something so smart or seemingly compassionate that you’ve compared them to a real-life Lassie?

The Nevada County Search and Rescue certainly feels that way about a border collie named Saul.

Collie becomes real-life Lassie

In a July 14, 2022 Facebook post, the rescue team described what Saul did for his 53-year-old owner, who was on a hike earlier in the week in Nevada County, California.

On July 12, the duo set out for an adventure, but the man fell 70 feet down the side of a hill. Even worse, he was out of cellular service range at the time and could not call for help.

It wasn’t until the next day that the injured man – who broke his hip and ribs – managed to get himself to an area where his phone worked and call for help. CalFire immediately sent out the Search & Rescue unit, but it was Saul who found them first.

The big rescue

According to the FB post:

“Earlier today SAR was requested by CalFire to assist in searching for a 53 year old male that had fallen approximately 70 feet and complained of a broken hip and broken ribs. 25 SAR Members responded and located the subject but the true credit goes to the subjects k9 Border Collie that ran through the forest approximately 200 yards and in true ”LASSIE” fashion to flag down two searchers and led them back to the subject which was covered in a camo tarp.

Sar members packaged the subject and transported him to a landing zone a half mile away where CHP H 24 was standing by to transport the subject to a air ambulance a few miles away.

Great work and skill by all involved today and for the Border Collie he was transported back to Grass Valley and given a well-deserved dinner.”

“Like a movie”

Sergeant Dennis Haack of the Nevada County Sheriff’s Office Search and Rescue told CNN affiliate KCRA: “At first we didn’t believe it because it sounded like a movie. When they came back and actually described it to us, the reality was that they had followed the dog directly to the victim.”

Hiking accidents can be deadly since victims can be hard to pinpoint and locate in wooded areas or in places where satellite service is spotty. The rescuers received the call at noon, but it wasn’t until 7 pm that they managed to read the victim.

But once Saul heard them nearby, he knew what to do.

“(Saul) was jumping up and down and spinning around in circles,” Haack said, according to KCRA.

What a good boy!

–WTF fun facts

Source: “This dog led rescuers to his owner after he fell 70 feet on a hike” — CNN

WTF Fun Fact 12800 – Monkeys and Bananas Don’t Mix

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Color us shocked by this one. We had no idea that monkeys don’t actually eat bananas in the wild OR that bananas are actually really bad for monkeys!

Monkeys love bananas, but…

Monkeys love bananas the same way we love junk food. And when people first started to keep monkeys as pets, they would give the creatures choices of things that grew locally. It turns out, that monkeys often chose bananas simply because they’re tasty.

If someone asked you what you’d like to eat and put down your favorite snack next to a bunch of vegetables, you’d probably reach for the sugary snack. Our brains love sugar. Unfortunately, for all of us primates, sugar isn’t good for us. It can affect our teeth, interfere with our digestion, make us gain weight, and lead to diseases such as diabetes and heart disease.

The same goes for monkeys.

Bananas are for humans

We think of bananas as healthy because they have a lot of potassium and our bodies are a lot bigger than a monkey’s. When we eat a banana, we taste the sugar, but it’s not really enough for it to be considered “junk food.”

The way bananas are grown, they simply don’t have enough protein or fiber for them to be of much nutritional use to monkeys.

According to Dr. Amy Plowman at Paignton Zoo in Devon (who made news when she banned bananas for monkeys) said: “People usually try to improve their diet by eating more fruit – but fruit that’s cultivated (grown) for humans is much higher in sugar and much lower in protein and fiber than most wild fruit because we like our fruit to be so sweet and juicy…Compared to the food they would eat in the wild, bananas are much more energy-dense – they have lots of calories – and contain much more sugar that’s bad for their teeth and can lead to diabetes and similar conditions.”

Of course, weaning monkeys off bananas is just as hard as telling humans to stop eating sugar. Monkeys should be eating leafy greens instead. Of course, a captive monkey can be stripped of the choice of what to eat, so improving their diet is a lot easier than improving our own. – WTF fun facts

Source: “Monkeys banned from eating bananas because they’re unhealthy” — BBC UK

WTF Fun Fact 12799 – The Migratory Monarch Butterfly Is Endangered

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Migratory monarch butterflies (Danaus plexippus plexippus) are a subspecies of monarchs, and while you may have seen them in your backyard growing up if you’re over 40, chances are you’ve seen a lot less of them lately. Migratory monarchs are now endangered and could go extinct.

The iconic monarch butterfly

These iconic American butterflies are black and orange. Like other monarchs, their larvae feed on only one plant – milkweed. Climate change and fires have destroyed much of the milkweed in America and conservationists are encouraging people to plant more.

The butterflies are also threatened by pesticides, herbicides, deforestation, and urban development. In fact, they’re so threatened that a Switzerland-based conservation organization that monitors the status of wildlife – the International Union for Conservation of Nature (IUCN) – has added them to the list of threatened species.

They join around 41,000 other species that could become extinct without intervention.

Migratory monarch populations

Migratory monarchs in the American West face the largest extinction risk, having lost 99.9% of their population over the last 40 years, according to Smithsonian Magazine (cited below).

The number of Western migratory monarchs went from ten million in the 1980s to 1,914 by 2021. That may not be enough butterflies to keep the population alive.

But according to Smithsonian Magazine, there’s still hope:

“To help boost monarch numbers, scientists and conservationists recommend planting more milkweed and nectar flowers, maintaining forests and limiting the use of pesticides and herbicides in the butterflies’ range, report CNN’s Madeline Holcombe and Jalen Beckford.

​​“People recognize the monarch,” Anna Walker, an entomologist at the New Mexico BioPark Society who led the assessment, tells the Washington Post’s Dino Grandoni. “People love the monarch. So that gives us an opportunity to do the outreach and get people on board.”

– WTF fun facts

Source: “Migratory Monarch Butterflies Are Listed as an Endangered Species” — Smithsonian Magazine

WTF Fun Fact 12790 – Dog Branded a Fake Hero By NYT

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In 1908, the New York Times ran a story calling a dog in Paris a fake hero. But before you jump to the canine’s defense, you might want to hear why. It turns out he was a bit of a bad boy.

Dog Saves Child

As the story is told, a heard a child screaming for help one day by the Seine river in Paris. And like a proper hero, he jumped in to rescue the poor kiddo.

Of course, he was greatly rewarded.

It turns out that the slab of meat he received as a reward was something he didn’t want to give up. So he presumably figured he’d just wait by the Seine to see if his heroics could be of service again. And it didn’t take long for another child to fall in.

Once again, the dog saved the child and was rewarded.

Now, remember the story of Pavlov’s dogs.

“Fake hero” dog pushes children

Eventually, someone noticed that a suspicious number of children were falling into the Seine, and always nearby a certain meat-loving canine. At first, people thought there was some sort of child-drowning criminal wandering about the neighborhood.

It didn’t take long for people to figure out that the dog eventually started pushing kids in if he had to wait too long for a rescue and reward scenario to present itself.

That’s what landed him on the front page of the NYT in a story titled “DOG A FAKE HERO.”

Now, whether the story is true or not, we can’t say. We only know what the NYT reported. Sadly, they didn’t follow up on what may have happened to the dog nor did they mention whether or not any of the children noticed that they took a swim courtesy of the canine.

–WTF fun facts

Source: “The Dog Who Kept Pushing Kids Into A River To Acquire Steak Rewards” — IFL Science

WTF Fun Fact 12786 – Endless Albatross Flying

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It seems impossible, but albatrosses can go years without ever landing on the ground.

Albatrosses get a bad rap. They’ve long been a metaphor for a psychological burden that’s difficult to escape. This originated not in any real story but in a poem by Samuel Taylor Coleridge called The Rime of the Ancient Mariner published in 1798.

In the poem, an albatross flies out with a ship heading to sea. But the mariner shoots it with a crossbow. Since the albatross is normally a sign of good luck, the action curses him and his crew, who tie a dead albatross around his neck.

But what’s so great about an albatross

Albatrosses are large seabirds whose wingspans can reach over 10 feet. The “great albatrosses,” the wandering and royal albatrosses, have the widest wingspans—ten feet or more—of any living bird.

The albatross’ flying forte

According to Smithsonian Magazine (cited below): “Albatrosses are masters of soaring flight, able to glide over vast tracts of ocean without flapping their wings. So fully have they adapted to their oceanic existence that they spend the first six or more years of their long lives (which last upwards of 50 years) without ever touching land.”

Who knew an animal could fly, move, or even glide that long?!

The albatross’ future

Sadly, albatrosses are endangered – in fact, Smithsonian Magazine reports that they’re “one of the most threatened families of birds on earth. All but 2 of the 21 albatross species recognized by the International Union for the Conservation of Nature are described as vulnerable, endangered or, in the case of the Amsterdam and Chatham albatrosses, critically endangered. The scientists hope that the data they gather may save some species from extinction.”

The birds mate for life, but reproduction is a two-step process that requires the right conditions and a long time to produce an egg. Once it hatches, predators abound.

– WTF fun facts

Source: “The Amazing Albatrosses” — Smithsonian Magazine

WTF Fun Facts 12785 – Dogs Are Family

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A 2017 survey from Rover.com found that Americans are really fond of their dogs. In fact, “dog people” tend to prefer their pets over people at times.

People think of dogs as family

Aside from the finding that 54% of dog owners said they would consider ending a romantic relationship if their dog didn’t like their partner, the report also noted that:

24% of dog owners make up songs to sing to their dogs
29% share more pictures online of their dogs than of friends and family
47% of those with a significant other admit they’d find it harder to leave their dog for a week than their human partner

Other furry findings

According to Rover.com’s report on their findings, there are 54 million households in the U.S. wth dogs.

  • 94% of dog owners consider their dog a part of the family
  • 56% greet their dog first when they return home before greeting the rest of the family.
  • 78% would include their dog in family moments like marriage proposals, holiday cards, and even vacations
  • 56 percent% have celebrated their dog’s birthday

Being a dog owner is even good for our health. “Dog ownership increases leisure time and physical activity by nearly 70 percent.”

According to Rover pet lifestyle expert Brandie Gonzales, “Young Americans are less likely to be homeowners or parents than previous generations, but one category they lead in is pet ownership. They shower their dogs with attention and splurge on expensive gifts because their dog is their best friend, and they want to be their dog’s best friend too.”

Millennials may have killed department stores and traditional marriage, but they sure were a boon for the animal rescue industry! At least one thing has remained stable over time – dogs are still man’s best friend.

– WTF fun facts

Source: “Rover.com Reveals New Research on ‘Dog People'” — Rover.com

WTF Fun Fact 12779 – Goat Yoga

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Goat yoga began in Oregon when a local yoga instructor, Heather Davis, asked Lainey Morse if she could hold a class on her animal therapy farm in August of 2016. Of course, the answer was yes and everyone – goats included – seemed to have a great time.

From yoga with goats to Goat Yoga(TM)

When Morse sent photos from that event to Modern Farmer magazine, everyone was obsessed. The practice took off and is now performed all over the world.

According to CNBC (cited below), Morse said of the fateful moment she sent in the photos: “Within a few minutes, they contacted me and said, ‘We have got to do a story on this.’” The story came out and changed her life. “You never know what it means when something goes viral, but it feels like a roller coaster going 100 miles an hour, and you can’t get off.”

“By the time Morse had the business fully up and running, “I had over 2,300 people on the wait list.” She started listing classes on Facebook, and “realized I can’t have 400 people on my farm showing up for goat yoga.” She soon came up with a registration platform to bring order to the process.”

As for Goat Yoga(TM), it’s not really a thing. Trademarks have long been denied and copycats exist everywhere. It did, however, become a 6-figure business. But it’s expensive to run.

“There were other big expenses along the way, like spending thousands of dollars on tents to protect outdoor sessions during inclement weather, only to see the tents destroyed in wind storms. She also had to buy special mats for customers because the goats would eat (or poop on) yoga mats people brought themselves.”

How do the goats feel?

Goats are pretty friendly and show happiness when they’re in good situations. In most cases, they probably don’t mind Goat Yoga too much.

Of course, not all goat yoga teachers are good to the goats, and animal rights activists have taken up the issue. That said, not all goats are the same, so there are probably some goats that would rather be anywhere else. – WTF fun facts

Source: “This woman’s goat yoga business is bringing in 6 figures” — CNBC

WTF Fun Fact 12772 – Real-Life Paw Patrol

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Remember McGruff the Crime Dog? Ever watch Paw Patrol with your kids? Well, it turns out dogs really do take a bite out of crime – just not in the way we expected.

The Pros of a Paw Patrol

Recent research in the journal Social Forces has found that neighborhoods that contain more dogs have lower levels of crime. But the paper, titled “Paws on the Street: Neighborhood-Level Concentration of Households with Dogs and Urban Crime,” found that it wasn’t the dogs themselves that deterred criminals.

Based on the work of Jane Jacobs, this research adds to the idea that “eyes on the street” can (but don’t always) help deter bad actors. That’s a plus for communities where people get out of their houses and are seen by neighbors. (But it’s obviously not that straightforward, and Jacobs failed to take into account race and class in much of her research.)

Eyes on the street

Nevertheless, the new research suggests that in many neighborhoods, the presence of community members makes a neighborhood less likely to seem like a target for crimes such as theft. Not only do neighbors get to know each other better and establish trust, but more eyes mean more potential reporters when people who see something wrong.

Of course, we’ve seen reporting of “something wrong” go sideways in many cases, especially when it comes to situations that involve race and class differences. We’ve also seen that a police response isn’t the best way to keep crime down. So this research just provides a general sense of how things might work for some neighborhoods.

So what’s the deal with dogs?

Dogs come into play because people need to walk them – and people do this at all hours of the day. Neighborhoods with dogs tend to have a lot more human activity out on the sidewalks. In general, the evidence showed that this was largely a good thing when it came to deterring crime.

The researchers found that neighborhoods with higher concentrations of dogs tended to report less robbery, homicide, and aggravated assault rates (as long as “eyes on the street” came with an increased level of trust).

As always, it’s important to note that the researchers found a correlation between dog ownership and less crime. This is not the same is causation – meaning we can’t say that owning dogs leads to less crime until there’s far more evidence. –WTF fun facts

Source: “Dogs Could Be Lowering Crime Levels in Your Neighborhood. Seriously” — ScienceAlert

WTF Fun Fact 12767 – Lyrebird Mimicry

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There are actually two types of lyrebirds, both live in Australia, and both are fabulous mimics. We just think the superb lyrebird has a better name. The other one is called Albert’s lyrebird and it’s a little less showy (but equally capable of mimicry).

Lyrebird taxonomy

The superb lyrebird belongs to the genus Menura (family Menuridae, order Passeriformes, if you like to get truly taxonomic). The birds live in the forests of southeastern Australia and do not fly – they are groundbirds.

For the most part, they’re not so impressive to look at. They look a lot like brown chickens. Well, except for the male superb lyrebird – he has to show off to attract females.

What does a lyrebird look like?

According to Britannica (cited below), “the male’s tail consists of eight pairs of ornate feathers, which resemble a lyre when erect. There are six pairs of filmy whitish feathers. One pair of 60–75-cm (24–30-inch) feathers that form the arms of the ‘lyre’ are broad and curled at the tip and are silvery on one side and marked with golden-brown crescents on the other. There are also two equally long ‘wires,’ narrow, stiff, slightly curved feathers that correspond to a lyre’s strings; they are situated in the centre of the curved ‘arms’…When the male displays in small clearings, which he makes at several places in the forest, he brings his tail forward so that the white plumes form a canopy over his head and the lyrelike feathers stand out to the side.”

Lyrebird mimicry

Here’s our favorite part of Britannica’s description: “In this position he sings, while prancing in rhythm, far-carrying melodious notes interspersed with perfect mimicry of other creatures and even of mechanical sounds.”

You might not think much of that at first, but the fact that a bird can mimic just about any sound is not only impressive but potentially creepy. Imagine walking through the deep forest in Australia (known for all manner of amazing-yet-terrifying creatures) only to hear the sound of a predator, a crying child, or a chainsaw!

We’d be freaked out, to say the least.

Seriously, listen to this bird mimic a baby crying!

Ok, now listen to construction noise (we had to double-check to make sure it was real):

Next time you head construction in the outback, look closer to the ground if you don’t see any men with tools. It may just be a lyrebird trying to troll you.

–WTF fun facts

Source: “Lyrebird” – Britannica

WTF Fun Fact 12752 – The Loudest Animal

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What would be your guess for the loudest animal on earth? A lion? An elephant? What about a shrimp?

Ok, but what about a specific type of pistol shrimp named after the bank Pink Floyd? That sounds a bit more believable,

The loudest animal

You’ve probably never heard a pistol shrimp make a noise unless you spend time near reefs with your head underwater. But the way they catch their prey is pretty interesting. They use bubbles.

By snapping their claws super hard and fast, a pistol shrimp can create a bubble that travels out from their bodies at around 60 mph. That’s enough to stun their prey so they can attack.

But when the bubble pops, it really makes the ocean rock.

Noisy eaters

One specific type of pistol shrimp is known for being a particularly noisy eater (or at least bubble-maker). Synalpheus pinkfloydi is pistol shrimp named after Pink Floyd. Because, hey, why not? We’re pretty sure one of the coolest things about being a scientist is getting to name stuff to your liking.

Anyway, this little shrimp can snap so hard that when it’s bubbles burst the noise can reach up to 210 decibels, according to the Ocean Conservancy (cited below). That’s louder than an actual pistol. Gunshots can reach around 175 decibels.

Clawing their way up the chain of command

The Ocean Conservancy also notes that “The pistol shrimp’s mighty snap comes in handy for more than just lunch. Its powerful claw can deter predators or other competitors looking to take over the shrimp’s burrow. It also makes males more attractive to the ladies—larger claws suggest they are better mates.”

It turns out a good claw is better than a pistol any day!

But it turns out pistol shrimp are also lovers, not just fighters. They work together – even with other species – to help find food and keep their hunting mates safe. So next time you’re hunting in a reef, find a friend with a big claw!

– WTF fun facts

Source: “The Real Power of the Pistol Shrimp” — Ocean Conservancy

WTF Fun Fact 12751 – Snails Can Sleep For 3 Years

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You know have knowns snails live their lives at a leisurely pace, but snails can actually sleep for three years at a time!

They’re also hermaphrodites, which means they have male and female reproductive organs, so they don’t even need other snails to mate. They are the ultimate hermits.

But those three-year naps aren’t necessarily a good thing (no matter how comforting they might sound to your right now).

Snails sleep longest in summer

Some snail hibernation is called “estivation.” Hibernation is something that happens when animals sleep to conserve energy in the winter. Snails also sleep in the summer – that’s estivation. Snails can actually do both, but it mostly depends on species or geography (nevertheless, it’s still a skill we’re jealous of).

But why do snails sleep for three years?

Well, not all do. In fact, a three-year estivation typically occurs when the snail’s resources are so depleted that it’s either sleep-or-die. (Yes, we know how relatable this sounds – especially if you have little ones.)

A gooey slumber

Even if snails are estivating for much shorter periods of time, they secrete mucus that covers their whole bodies if the weather is too hot or dry. The mucus helps to protect them from hot or dry weather.

Snails need moisture to survive, so they just provide their own!

Of course, a gooey nap doesn’t protect them from predators thinking they’re dead.

Snail power naps

Snails usually sleep for about 15 hours at a time and then are awake for 30 hours. But that’s under optimal environmental conditions (which are kind of hard to come by these days, no matter what your species.)

This kind of sounds like a productive schedule, if we’re being honest. (Or maybe we could just use a very alert 30 hours to get our work done.)

Beware the sleeping snail

If you think a snail is dead, consider that it may just be taking a power nap. This is especially the case if you keep a snail as a pet. If it is stuck to the side of an aquarium but not moving, it’s likely still alive because it’s secreting mucus to make it stick.

Pet snails are unlikely to hibernate for years (mostly because if humans are providing suboptimal conditions, it’s likely bad enough to just kill the snail).

If the snail’s body is shriveled and dry (if you can see into the shell), then the snail is almost certainly dead (sorry for your loss).

And if you see a snail in the garden, well, that’s up to you and how much you want them around, but crushing it because you think it’s dead could be a deadly mistake for the snail.

– WTF fun facts

Source: “Let’s Learn Exactly How Some Snails Sleep” — AZ Pet Vet

WTF Fun Fact 12748 – Koala Bears Have Fingerprints

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Koala bears have fingerprints just like apes and humans. This is surprising since our last common ancestor lived over 100 million years ago.

Nevertheless, koalas have retained their unique fingerprints.

We tend to think of fingerprints as solely a product of our criminal justice system. And yet, those little lines on our fingers actually serve a purpose besides putting us at a crime scene.

The purpose of fingerprints

Our fingerprints help us grab and feel objects, and researchers believe they help our sense of touch. This isn’t so important to us anymore, but it is helpful to animals who can use touch sensations to judge whether leaves, for example, belong to the right tree.

Our fingerprints actually cause little vibrations when we run them over objects. And since koalas really only eat eucalyptus, they like to be sure they’re in the midst of the right kind of buffet before they start chowing down.

Fingerprints are unique

Since you can’t really tell a koala’s fingerprint from a human’s, at least in terms of patterns, they may be the perfect sidekick for a crime scene. There’s no koala bear fingerprint database, so you can pretty much just let them touch everything to upend an investigation (just kidding – don’t try this at home – or anywhere else for that matter).

However, if a koala at a zoo has committed a crime, theoretically, you could fingerprint the residents to figure out whodunnit. We don’t think that’s ever been a necessity, but it sounds like a good premise for a children’s crime novel (if those existed).

Koalas bears have fingerprints and other animals have…

While koala bears have human-like fingerprints, other animals have identifying marks on their paw pads as well.

According to New Scientist (cited below):

Individual cats and dogs, for example, have unique whisker patterns. Zebras have distinct stripe arrangements and individual leopards and spotted dolphins have their own spot patterns. Humpback whales also have unique markings on the underside of their tails.”

Who knew? – WTF fun facts

Source: “Do other animals have fingerprints? And what purpose do they serve?” — New Scientist

WTF Fun Fact 12747 – Flamingos Eat Upside Down

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Because of the way their heads and beaks are built, flamingos eat upside down. Well, at least that’s how their heads are positioned.

Flamingo beaks scoop up water in the areas where they feed. Then, that water is processed through a structure called the lamellae, which acts as a filter. It ensures that water, sand, and other less tasty things are then expelled back into the water while the marine creatures (such as shrimp and brine flies) that flamingos eat are trapped inside. (Another fun fact: this food is also what makes flamingos pink!)

Flamingo anatomy

A flamingo’s tongue is designed to push the water back out through these filtration mechanisms.

According to the San Diego Zoo, “Greater and Chilean flamingos are larger and feed mostly on invertebrates such as brine flies, shrimps, and mollusks. They get these food items from the bottom mud by wading in shallow water. Sometimes they swim to get their food and sometimes by ‘upending’ (tail feathers in the air, head underwater) like ducks.”

It all happens quite fast, but if you take a look at how a flamingo is built, you’ll see that eating upside down is really the only way.

Of course, flamingos breathe air, which means that while they’re attempting to feed, they need to hold their breath – something they can do for up to a few minutes at a time. They need to poke their heads up every now and then to get more oxygen.

Flamingos eat upside down even on a zoo diet

According to the zoo, their flamingos get a special diet with all the nutrients they need. But even in these cases, they still use the same upside down stature to take in their food:

“At the San Diego Zoo and the San Diego Zoo Safari Park, the flamingos are fed a special pellet diet that is made for zoo flamingos. This food has all the nutrients the flamingos need and a pigment that helps keep them “in the pink.” To allow the flamingos to eat in their normal way (taking in water and then pumping it back out), a water source just for feeding is near their food so they can get a “beakful” of water and then food—just like they would in the wild.”

Flamingo mysteries

Flamingos are interesting creatures and there are still some habits we can’t explain – such as why they sometimes stand on one foot. No one has definitively explained that behavior yet. – WTF fun facts

Source: “Flamingo” – The San Diego Zoo

WTF Fun Fact 12746 – Owls Don’t Have Eyeballs

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Owls have eyes, of course. But owls don’t have eyeballs.

Instead, owls have eyes shaped like cylinders (with three eyelids!). Because of this shape, owls can’t roll their eyes around while keeping their heads still. That’s why they have to move their heads around too much to look around.

How do owls see without eyeballs?

According to the Office of Science & Society at McGill University: “Since moving their torsos would likely make noise that would alert their prey to their presence, owls have evolved to have necks that can spin up to 270° essentially silently.”

But why would an owl evolve to have eye rods instead of eyeballs? Wouldn’t it just be easier not to have to move your head at all in order to see to the side?

Well, perhaps, but the benefit of having eyes shaped like rods instead of balls is that not only does it allow them to see better in the dark but it’s the optimal shape for an animal with such a small skull.

The benefit of eye rods

As you may have noticed, nocturnal animals tend to have large corneas. That’s so any light can be collected more efficiently, allowing them to see in the dark.

As it turns out, these elongated eye tubes make it even easier for them to see the way they need to, even if they do have to make more movement in order to get a larger field of vision (also called binocular vision). Without moving their heads, their visual field is about 110 degrees (a human’s is 180 degrees, for comparison).

Binocular vision

Binocular vision also lets owls see objects in three dimensions (height, width, and depth). So, it turns out an owl’s eyes are pretty perfectly suited to its lifestyle.

While some believe all of this means that owls can’t see during the day because they’re blinded by too much light, that’s simply not true. Some owls can see even better than humans in the daylight as well, despite the lack of eyeballs.

At least you never have to worry about an owl giving you the side-eye. –WTF fun facts

Source: “Owls Don’t Have Eyeballs” — Office of Science & Society, McGill University

WTF Fun Fact 12734 – Man Wins Horse Race

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For only the third time since 1980, a human has won the annual Man vs. Horse race. Ricky Lightfoot beat 50 horses (and 1000 other human runners) finishing the 22.5-mile course in 2 hours, 22 minutes, and 23 seconds. He won about $4200 for his efforts – as well as bragging rights amongst friends and foals alike.

IFL Science humorously recounted the beginning of the Man vs. Horse race:

“The idea for the race came, as you might expect, from a drunken argument in a pub. Landlord of the Neuadd Arms in Llanwrtyd Wells, Wales, overheard two customers arguing (as you do) over the benefits of people vs the benefits of horses. 

After a few more pints, as was inevitable, one of the men proclaimed that over a long distance people could equal the performance of any horse. Not satisfied with mere speculation, the landlord – Gordon Green – decided that there should be a public competition where this slurred theory could be tested. Every year since then – bar a few years where the event was canceled due to the pandemic – people have raced against horses in a constant battle for supremacy.”

Even more striking is the BBC report that “The winner of the grueling Man v Horse race has revealed he had been awake for 29 hours before the event after flying from Tenerife to claim victory…Landing at 04:00 he travelled to Wales, arriving at Llanwrtyd Wells, Powys, at 09:00 for the race start at 11:00. Crossing the line, the 6ft 4in athlete had no idea whether he had won as the people and animals take slightly different routes.”

The 37-year-old firefighter and father of 2 beat the first horse by over 2 minutes. So much for horsepower.

Apparently, Lightfoot’s family couldn’t believe he managed to win the race.

“I called my partner and said: ‘I beat the horse’. And she said: ‘You’re joking?’.
“And I said: ‘No, I did.’ She was like, ‘oh my God!'” he told BBC News.

Prior to the race, Lightfoot said he didn’t have much experience around horses.

“I’ve never rode a horse in my life. I once rode a donkey at Blackpool Pleasure Beach though,” he told the BBC.

After winning, Lightfoot headed right back home to Cumbria to report to work at 7:30 am the next day. – WTF fun facts

Source: “Man v horse: Powys race won by runner Ricky Lightfoot” — BBC News