Nature

WTF Fun Fact 12829 – Orca Attacks

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We’ve all seen orcas (aka Orcinus orca and “killer whales”) in photos, theme parks, or films (Free Willy, for example). They’re big, they’re black and white, and they are generally represented as friendly to humans (despite their name). And, to be fair, despite recent orca attacks, the vast majority of orcas have long been friendly – or at least tolerant – towards humans.

What’s up with the orca attacks?

Two summers ago, in 2020, a group of orcas off the coast of Portugal got agitated and started attacking boats. We don’t know why; we just know that it scared a lot of people to have a humungous animal try to nip at the bottom of their boats to the point of nearly sinking them.

Unfortunately, we can’t get the whales’ side of the story.

But we do know that behavior continued and that boaters of the coasts of both Spain and Portugal have continued to have their boats attacked from below by groups of orcas. And it’s gotten so common and so dangerous that some leisure boaters (the tourists, for the most part) are being asked not to go out into the waters for their own good.

The warnings are generally directed at nighttime boaters, who might sorely want to see the beautiful lights of Porto from the sea on a whimsical sailboat, but who would be putting themselves and rescuers in danger if they needed to be saved from capsizing when it’s dark.

Ok, but they are called “killer whales,” right?

Of course, there’s lots of speculation about why the whales are behaving this way, but most of it is just guessing, which isn’t very helpful (because most of it is uninformed and comes from people who don’t know much about the creatures’ behavior).

Some want to blame humans’ disrespect for the sea. And while you might want to make that case and even have some cold-hard facts to back it up, the whales aren’t down there reading our climate and pollution reports (thankfully). And they have no opinion on yachts or rich people who can afford to go to Portugal and rent a sailboat.

And despite the name “killer whales,” they have no real history of hurting humans (in other words, they don’t eat us). The nickname comes from sailors long ago who saw them preying on other whales and even sharks. After all, they’re pretty enormous (weighing in sometimes at 6 tons – or over 12,000 pounds), and they need big meals.

So-called “killer whales” are apex predators. In other words, nothing preys on them – they’re at the top (or apex) of the food chain. They do kill, they just aren’t known for killing humans.

So, what’s the deal?

In one case, investigators found that two of the orca attacks were “perpetrated” by whales that were injured. Whether or not they were injured by boats and seeking to defend themselves is unclear. It could be the case that they were looking to eradicate what they thought was the source of their pain.

But it doesn’t seem like every orca that has attacked a boat is injured.

In some cases, the whales are also young. So it may be that they have a different and more destructive notion of “play time.”

Whatever the issue is, marine biologists agree that there’s nothing premeditated about the attacks. But they are happening and whatever is going on out there (which is under investigation by professionals), it’s much wiser to cancel the pleasure cruises for now and give them a chance to calm down.

Taking preventative measures is a lot smarter than risking getting rammed by a whale (of any kind). – WTF fun facts

Source: “Orcas Attack So Many Boats Sailors Are Being Told To Stay in Port at Night” — Newsweek

WTF Fun Fact 12828 – Walking Sharks

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You have to be of a certain age to remember Steve Martin’s LAND SHARK! But when we think of walking sharks, this is where our mind goes. Anything else is simply too terrifying.

Of course, you don’t have to worry about a shark walking down the street. They walk underwater. For now…

Are there really walking sharks?

So, yes, there is a shark that can “walk.” But it’s rare, it’s small, and it’s not out to get you. Sorry to ruin the surprise so early in the explanation.

You may have seen the shark on social media since some guy saw one on a trip somewhere in Indonesia, hadn’t watched enough Shark Week, and then posted a video insisting he discovered a new type of shark. Of course, once marine biologists saw the footage they all said “Yeah, duh, that’s so 2006.” They’ve known about these sharks for a while, discovering them in 2006 in the Bird’s Head Seascape of West Papua, Indonesia.

Conservation International’s Mark Erdmann and his team currently study the walking sharks and their evolutionary origin. (Remember, if humans originated in the wet slime and eventually learned to walk on land, seeing a shark evolve to do the same is extra interesting!). And it turns out there are about 9 species of little sharks that can use their fins to both walk and swim.

So, what’s the real deal with these walking sharks?

According to Conservation News (cited below), these bottom-dwelling sharks “walk” using pectoral and pelvic fins. This allows them to traipse around coral reefs and stick their heads under rocks to look for more food.

Another cool fact about the sharks is that shark geneticists (which is definitely not a job we ever heard about during Career Day) have used genetic samples from shark fins to look at the genomes of these sharks, comparing them to older species to see when each branched off into a new species. In case you didn’t know, sharks are actually older than dinosaurs by about 200 million years. But according to these genetic analyses, walking sharks are only about 9 million years old.

If you’re still more freaked out than fascinated, just not that all 9 species “are found exclusively in a ring around Northern Australia, New Guinea and the satellite islands of Raja Ampat, Aru, and Halmahera in Indonesia.”

If you want to see the walking shark in all its glory, check out the video below:

–WTF fun facts

Source: “Discovery afoot: New study cracks mystery of how ‘walking’ sharks split” — Conservation.org

WTF Fun Fact 12826 – The Problem With Preferring Trees Over Grasslands

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Apparently, we’re tree snobs. Unfortunately, preferring trees over grasslands actually ends up hurting the environment because grasslands are complex and much-needed ecosystems.

Still, we have to admit we love trees.

Why do we love forests?

In a recent article for The Atlantic, writer Julia Rosen pointed out a painful truth:

“Grasslands rank among the most imperiled and least protected biomes on Earth. They are disappearing even faster than forests, and much of what remains has suffered varying degrees of damage. Their decline threatens a huge chunk of the planet’s biodiversity, the livelihoods of roughly 1 billion people, and countless ecological services such as carbon and water storage. Yet these losses don’t register with the same force as deforestation. Perhaps because we do not notice, or perhaps because we do not care.”

We had no idea. Still, we find ourselves thinking that trees are just more helpful – but apparently, that’s wrong (or at least misguided).

Preferring trees over grasslands is “arboreal chauvinism”

Ok, we’re not fond of the term, but it does some interesting linguistic work when you think about it. A lot of us really do think of grasslands as flat and boring and…beige.

Of course, no one who is advocating for grasslands, such as prairies, is against trees. They’re just trying to raise our awareness and change our perspective so we can appreciate the need to value and conserve them.

In other words, it’s time to stop looking at prairie land as “deforested” area or proto-forests that simply aren’t fertile enough to grow trees – in fact, grasslands are their own special thing.

What’s the big deal with grasslands?

Well, for starters, the problem with disregarding grasslands in favor of trees and forests keeps prairie, savannah, and other grassland plants and animals off of conservation lists and open to extinction.

Check out this not-so-fun fact from The Atlantic: “Just 1 percent of Texas’s prairies remain intact. (Nationally, about half of native grasslands have already been converted to cropland or consumed by development, and millions more acres are lost each year.)”

To appreciate just some of what grasslands have to offer, consider this:

“Despite their apparent simplicity, grasslands are bastions of biodiversity. They support everything from large, charismatic megafauna (think lions and elephants) to humble pollinators and rare wildflowers. The Cerrado, for instance, is home to more than 12,000 plant species, a third of which occur nowhere else on Earth. And a mountain grassland in Argentina holds the world record for the most plant species found within a square meter of land: 89.”

That’s a lot of biodiversity to give up if we don’t remember that forests aren’t the only type of ecosystems we need to preserve.

–WTF fun facts

Source: “Trees Are Overrated” — The Atlantic

WTF Fun Fact 12825 – Cows With Names Are More Productive

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Well, it may not be a big difference, but it is one worth mentioning. It turns out cows with names produce more milk. But they need more than a name – they also like a little one-on-one attention.

Researching cows with names

According to LiveScience (cited below), a UK study of 516 dairy cows conducted by researchers Catherine Douglas and Peter Rowlinson of Newcastle University found that “on farms where each cow was called by her name the overallmilkyield was higher than on farms where the cattle were herded as a group.” But it was just 3.4% higher.

We don’t really know how cows feel about their names, but it’s the personal touch that seems to do the trick.

Happy cows

LiveScience quotes one of the researchers (Douglas) as saying: “Just as people respond better to the personal touch, cows also feel happier and more relaxed if they are given a bit more one-to-one attention. By placing more importance on the individual, such as calling a cow by her name or interacting with the animal more as it grows up, we can not only improve the animal’s welfare and her perception of humans, but also increase milk production.”

Frankly, we think that makes perfect sense. Animals seem to know when their well-being is a priority. And it may even be the case that the farmers who name their cows tend to spend more time caring for them or even value them more (though the study didn’t explore that).

Other things to know about the study include:

  • 46% of farmers in the study called their cows by name.
  • 66% said they “knew all the cows in the herd.”
  • 48% said they believed human contact was more likely to produce cows with a “good milking temperament.”
  • Fewer than 10% of farmers felt that cows who fear humans had poor milking temperaments.

–WTF fun facts

Source: “Cows with Names Make More Milk” — LiveScience

WTF Fun Fact 12824 – Teen Invents Tool To Catch Elephant Poachers

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A teen named Anika Puri has invented a new way to catch elephant poachers.

“I was quite taken aback,” the 17-year-old Chappaqua, New York student told Smithsonian Magazine. “Because I always thought, ‘well, poaching is illegal, how come it really is still such a big issue?’”

Learning more about elephant poachers

Puri and her family visited India a few years ago and saw ivory lined up at a Bombay market. The ivory trade has been illegal for decades in India.

After some research, Puri realized African elephants are still being hunted and that the “forest elephant population had declined by about 62 percent between 2002 and 2011.” Those numbers continue to drop today.

As a wildlife lover who is gifted in science and technology, Puri invented a system to help catch poachers.

According to Smithsonian: “Drones are currently used to detect and capture images of poachers, and they aren’t that accurate, the teenager explains. But after watching videos of elephants and humans, she saw how the two differed vastly in the way they move—their speed, their turning patterns and other motions.”

Tracking and stopping elephant poachers

Once she saw the difference in movements between humans and elephants, she realized she could build a piece of technology to track their movements.

As a result, she spent 2 years creating ElSa (short for “elephant savior”). Still in the prototype stage, the machine-learning driven device “analyzes movement patterns in thermal infrared videos of humans and elephants.”

Better yet, Puri says the accuracy is 4 times that of other tools. Her tool also costs a mere $250 to make whereas others run into the thousands of dollars due to their use of high-resolution cameras.

However: “ElSa uses a $250 FLIR ONE Pro thermal camera with 206×156 pixel resolution that plugs into an off-the-shelf iPhone 6. The camera and iPhone are then attached to a drone, and the system produces real-time inferences as it flies over parks as to whether objects below are human or elephant.” – WTF fun facts

Source: “This Teenager Invented a Low-Cost Tool to Spot Elephant Poachers in Real Time” — Smithsonian Magazine

WTF Fun Fact 12822 – How Do Lobsters Communicate?

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Apparently, thousands of people look up “how to lobsters communicate” – and we’re guessing it’s because they’ve heard the truth and it’s hard to believe.

When we heard that lobsters communicate with their bladders and that they can make things known to other lobsters by urinating at them, we thought it was a grossly creative form of expression. But it gets even better.

While it might not be the most exact description of what’s happening, no less an institution than the New England Aquarium has informed lobster learners that the creatures actually “pee out of their faces.”

Say what?

Ok, so let’s break this down a bit. First of all, lobsters use scent to communicate (as do humans, to be fair). You’ve heard of pheromones, right? The scented hormone we secrete?

Because this factoid ran rampant around the internet with such gusto, Snopes to it upon themselves to get the details (gotta love those professional fact-checkers!). They describe the scented face-peeing this way:

“Found within a lobster’s pee are a fair number of pheromones, which they disperse through theirnephropore rosette glands. The bladder of a lobster is located under its brain, and the rosette glands are connected to the urinary tract.”

Ok, so the key here seems to be the anatomy – the bladder is right under their brain. There’s only so much room in a lobster, and those of us who have eaten them should probably be grateful that we don’t have to pick their bladders out of their tails.

As for the urine stream comes out of their face, Snopes explains further:

“Once these pheromones are produced, they are introduced into the urine stream. In the case of the American lobster, scientific name Homarus americanus, this pheromone-rich pee is released from nephropores at the base of the lobster’s large antennae and then injected into its gill current. According to the NEAQ, it has been determined that this urine stream can reach a length of seven times the lobster’s body.”

Wait, so how do lobsters communicate this way?

You probably still have some questions. Like, what’s a gill current? Well, according to The American Lobster:

“Water passes up through openings between the lobster’s legs, over the gills, and up towards the head.Every few minutes this current of water is reversed the other way so that debris can be flushed out of the chambers.An important part of this “gill current” is that when it is flowing forward towards the head, it can project urine forward.It is thought that the urine of the lobster contains important information about the sex of the lobster and its physiological state.”

Now that we know how lobsters pee out of their faces, we still need to know how and why it works this way. So, back to Snopes (which is cited below and which also has further reading at the bottom of the page for all your legit lobster urine research needs).

When male lobsters want to attract a mate, the females tend to come to him. But he needs to be in a defensive position. As Snopes says: “Their claws are located at the front, which enables the lobster to back into a shelter and face outward toward the entrance, setting up a first line of defense — and attracting a mate.”

Territorial lobster communication

Snopes also cites the conservation organization Oceana, which reports that a male lobster tends to dominate one piece of territory and females wait outside the den to mate with him. To let him know they’re out there, they pee in his direction out of the nozzles on their face.

Hey, who are we to judge?

Of course, the urine contains the pheromones that signal she’s ready to reproduce. So – and here’s another fun fact – she takes off her exoskeleton (basically stripping naked) once she gets into his den to mate. We are seriously not making this up.

Other lobster communication-by-urine tactics

Ok, so there’s one mating ritual out of the way. But females aren’t the only ones who urinate out of their faces to send a message. When males fight, the winner will do the same to signal to any nearby females that he’s the winner and ready to pass on his superior genes to any females nearby. “It’s thought that the winner of a match will also contain more serotonin and happy hormones, making him even more attractive to a would-be match.”

Snopes caps us off with yet another fun fact:

“How does a female return the favor? By peeing in his face, of course. Pheromones released in a female’s urine are thought to reduce the aggression of an embattled male and he’ll often allow the female to enter his burrow, where she might stay for up to two weeks. While the two shack up, the cohabitating female will also be urinating to ward off other ladies in the area — until it’s their turn.”

Lobsters – they’re just like us! – WTF fun facts

https://www.youtube.com/watch?v=SnmnVqiy4-s

Source: “Lobsters ‘Pee’ Out of Their Faces. Here’s Why …” — Snopes

WTF Fun Fact 12821 – Lemmings Don’t Commit Mass Suicide

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We often use “lemming” as an insult towards people who seem to just go with the flow, even if that means following everyone off the edge of a cliff. It comes from the myth that lemmings commit mass suicide in some unthinking way.

And that’s a load of bunk.

Why do we think lemmings jump off cliffs?

There are a lot of weird myths about lemmings (such as the myth that they explode when angry). But the most popular myth is the one that lemmings will follow each other off the side of a cliff.

And we tend to believe this because it comes with the explanation that people have seen piles of dead lemming bodies.

But it’s just not true.

The lemming legend

According to Britannica (and science, in general): “…one myth that has held on tenaciously: Every few years, herds of lemmings commit mass suicide by jumping off seaside cliffs. Instinct, it is said, drives them to kill themselves whenever their population becomes unsustainably large.”

Why we believe, Part 1 – The behavior of some lemmings

Ok, so lemmings do not have any suicidal behavior, They do not follow each other off cliffs or commit any other act of mass suicide. But it may be the case that the myth originates with a few dead lemmings.

The creatures often have population booms. This is bad because too many lemmings in one place means there’s less food and other resources for everyone. As a result, lemmings tend to separate, with a large group heading off to find a better environment.

Of course, they don’t always make it. And while they can swim, crossing bodies of water can be deadly for any group of animals. Seeing some dead lemmings in the water (just because a handful out of hundreds drown) may have led people to believe in the suicide myth.

Why we believe, Part 2

We know a lot about animal behavior, so that raises the question: why do we still believe this even though we could easily look it up and find out it’s not true?

Well, that’s because we find it too believable to question. Or, as Britannica notes: “…it provides an irresistible metaphor for human behavior. Someone who blindly follows a crowd—maybe even toward catastrophe—is called a lemming. Over the past century, the myth has been invoked to express modern anxieties about how individuality could be submerged and destroyed by mass phenomena, such as political movements or consumer culture.”

In other words, we want to believe. It’s too good of an insult to pass up.

Why we believe, Part 3 – The lemming lie

Let’s give ourselves some credit here though. If this myth hadn’t been repeated as fact so many times in so many places, more of us may have questioned it. It’s not a great excuse, but there is some truth to it.

And, apparently, the big lie about lemmings comes from a Disney nature film.

The worst part is that a giant lemming suicide was staged in order to provide fodder for the 1958 Disney film White Wilderness, when “filmmakers eager for dramatic footage staged a lemming death plunge, pushing dozens of lemmings off a cliff while cameras were rolling.”

This fraud led thousands of people who saw the film to say they had seen such a moment in what they thought was a documentary. But it was all a lie. – WTF fun facts

Source: “Do Lemmings Really Commit Mass Suicide?” — Britannica

WTF Fun Fact 12819 – Jonathan the Tortoise

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Jonathan the tortoise is the oldest known land animal. And in order to fact-check that (since we feel like it would be an easy claim for people to make without much proof), we turned to Snopes.

An 1886 photo of Jonathan the Tortoise

The rumors about a 100+-year-old tortoise actually started in early 2022 when a website called MajesticAnimals.net posted a photo from what they said was the early 1900s claiming to show a tortoise named Jonathan who is still alive.

The photo was credited to the director of an NGO on Saint Helena Island where old tortoises are known to live.

Says Snopes: “Jonathan has been misidentified in viral photographs before. We have reached out to the government of Saint Helena Island, where the tortoise lives, to confirm the authenticity of the image.”

The image is real – but the site got one thing wrong. It’s actually OLDER than they claimed, and therefore so is Jonathan!

Jonathan is pushing 200!

One of the photos is from 1886! And Jonathan is already full grown. He’s been on Saint Helena for a very long time, and his age is estimated to be somewhere around 190 years old!

As you might imagine, he’s quite a tourist attraction. So if you’re ever in the South Atlantic, off the coast of Namibia, you can visit Jonathan at the governor’s residence “where he gets hand-fed fruit and vegetables and ‘frolics’ with female tortoises, according to an AFP News Agency video profile, even though he has lost his sight due to cataracts.”

It’s doubtful Jonathan would still be alive without human intervention at this point since a blind tortoise wouldn’t fare well out in the wild.

And the latest rumor about Jonathan is that he is also gay and has a male lover. Apparently, he was partnered with a tortoise named Fredrica back in 1991, and when the caretakers wondered why they weren’t producing any offspring despite their frequent mating, they realized she was a he.

Want one more fun fact to top you off? Saint Helena is the island where Napoleon died after his exile. His body is now in Paris, but you can still visit his original grave after you go to see Jonathan. – WTF fun facts

Source: “Yes, Jonathan the Tortoise Is the Oldest Known Land Animal” — Snopes

WTF Fun Fact 12818 – Does Viagra Make Flowers Last Longer?

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It might not be the most cost-efficient use of the medication, but the answer to “does viagra make flowers last longer?” is yes. It also makes the stand up straight.

How does viagra make flowers last longer?

According to a study in the British Medical Journal (cited below): “Viagra (sildenafil citrate) is good not only for treating male impotence. Israeli and Australian researchers have discovered that small concentrations of the drug dissolved in a vase of water can also double the shelf life of cut flowers, making them stand up straight for as long as a week beyond their natural life span.”

In fact, “1 mg of the drug (compared with 50 mg in one pill taken by impotent men) in a solution was enough to prevent two vases of cut flowers from wilting for as much as a week longer than might be expected.”

How does it work? Well, according to the study “Viagra increases the vase life of flowers by retarding the breakdown of cyclic guanosine monophosphate (cGMP) (the production of which is mediated by nitric oxide).”

Basically, that means flower wilting and erectile dysfunction involve the same enzyme, and Viagra helps slow down the breakdown of that enzyme. In men, this allows blood vessels to stay open longer, and in plants, it does the same to their vascular tissues.

No more flaccid flowers

Of course, you may not want to go through the trouble of getting a Viagra prescription (or raid anyone’s medicine cabinet) for the sake of your centerpieces. There are other ways of getting some flowers to spring to attention. For example, putting a few old pennies (that still have some copper component) in a vase of tulips will also make them stand up straight.

While all of this news came out in 1999, the Viagra method of flower preservation started trending again on TikTok in 2021. – WTF fun facts

Source: “Viagra makes flowers stand up straight” — BMJ

WTF Fun Fact 12812 – The Mating Calls of Female Sloths

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One thing we all know about sloths is that they’re slow. In fact, it’s pretty rare to witness a sloth moving at all, much less making the effort to mate. But female sloths have found a solution that allows them to find a partner with relatively little effort – screaming.

The sex of sloths

Three-fingered sloths, in particular, are hard to tell apart when it comes to determining their sex. According to Sloth Conservation (cited below) “Both sexes have a shaggy black mane around their necks. The appearance of the mane is unique to each individual, and it is not currently obvious if there is any sexual dimorphism in regards to its appearance.”

That doesn’t mean two-fingered sloths are any easier to tell apart. “In two-fingered sloths, distinguishing between males and females is notoriously difficult. This has led to some embarrassing mistakes at zoos and rescue centers, where two sloths thought to be of the same sex have been put into the same enclosure, only to produce a newborn baby some months later!”

The mating female sloth

One way you can tell male and female sloths apart is their mating behavior. It’s unknown if sloths have a specific mating season, but they’re fertile for about one week out of every month. And they let everyone know about it!

While their activity level increases during fertile periods, it’s mostly to produce vocalizations. Female sloths don’t walk around looking for mates – they sit in trees and scream incredibly loud to let males know they’re “available.”

The Sloth Conservation Foundation confirms: “These vocalizations, or “screams”, sound like bird calls or shrill whistles. She will do this for eight to ten days every single month, with the vocalizations increasing in frequency until she is screaming every 10 to 15 minutes. The male three-fingered sloths get very excited when they hear this call and will go in search of the female making it.”

Sound a lot easier than dating! – WTF fun facts

Source: “Sloth Mating: Not as slow as you think” — Sloth Conservation

WTF Fun Fact 12810 – The Platypus Has No Nipples

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Platypus nipples are probably not the first thing that comes to mind when you think of interesting animal facts. But the fact that the creature has none is actually pretty wild.

We might think of nipples as something less than wholesome, but they serve a purpose – to feed the young.

How does a platypus feed their young without nipples?

In what may be one of nature’s strangest oversights, platypuses so have a milk duct, they do produce milk from their young, but there’s so central “outlet” from which to feed.

And while it’s bizarre to picture (but we swear this is how it works), the mothers secrete milk through their mammary glands, and it then rolls down their skin, collecting in the little grooves on their bodies. And that’s where their young find it to feed. In cases where there are patches of fur, the babies simply suck the milk out of those soaked fur patches.

It seems…less than efficient. But the platypus still exists, so it must work just fine for their species!

Platypus birth is also unique

The platypus is a monotreme – a creature in which reproduction takes place by females laying eggs. That might not seem like a big deal, but these are mammals. So it’s actually incredibly rare. Vertebrates (which are animals like birds, fish, reptiles, etc. all lay eggs), but the platypus and echidna (or spiny anteater) are the only common mammals that do it.  

When it’s born, the baby platypus cuts its way out of the egg using an “egg tooth” that grows on the end of its nose. This “tooth” is made of keratin (just like fingernails), and it falls off not long after.

Other fun facts about the platypus

According to the American Museum of Natural History (cited below), other fun facts about the platypus include:

“A female platypus usually lays only two eggs at a time and rarely leaves her stream-side den while nursing her young. When she does leave, she plugs the den opening with dirt.”

and…

“A platypus’s bill can sense tiny electric currents produced by the bodies of small animals, helping it hunt in muddy water.”

To be honest, we never gave much thought to the platypus. They’re not much to look at (though some might say they’re cute), but they’re certainly interesting from a biological standpoint!

– WTF fun facts

Source: “Platypus” – The American Museum of Natural History

WTF Fun Fact 12808 – Mourning Geckos Are All Female

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Nearly every mourning gecko ever born has been a female. In fact, the species does not need males at all since the females are parthenogenic, meaning they can reproduce on their own. The female geckos can basically produce semi-clones of themselves to keep the species going.

Characteristics of the mourning gecko

These small lizards look a bit “warty,” but they’re an incredible species. However, it’s pretty rare to see one outside an aquarium. They’re native to southeast Asia, and while they occur throughout the Americas, Australia, and the Pacific islands, they are nocturnal creatures (though they are drawn to walls near artificial lights).

Gecko reproduction

So, what’s parthenogenesis? It simply means females can reproduce on their own, and there are a few different species that can do it (some crabs, snails, and the komodo dragons, for example).

In the case of the mourning geckos, they lay one to two eggs every two to four weeks over the course of their five-year lifespans. The eggs are laid in communal nesting spots and hatch 50 – 75 days later. The baby geckos are able to lay their own eggs after about eight months.

Female geckos clone themselves, in a way. All of the genetic material in the egg comes from them, but they are able to recombine their DNA to produce some genetic variation.

That explains why occasionally males are born. But the males are infertile, so they don’t serve much of a purpose to the species.

The problem with cloning

The downside of cloning yourself is that you have a limited amount of genetic material to work with. If a gene mutation exists, all of the progeny will have it.

If one of those mutations turned out to be fatal, it could spread through a population quickly and threaten its future.

Other cool gecko facts

Females can display courtship-like behavior, despite the species having no need for mating. The little lizards bob their heads and use sounds to communicate.

Oh, and they clean out their eyes with their tongues and shed their tails if they’re being captured.

– WTF fun facts

Source: “Mourning Gecko” — Georgia Aquarium

WTF Fun Fact 12807 – Snails Have Teeth

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Have you ever wondered how a snail eats? We sure haven’t! But it turns out that snails have teeth laid out along their tongues – thousands of them, in fact.

Snail “teeth”

Snails have teeth, but they’re nothing like human teeth. First, the rows of minuscule teeth are laid out on their tongues. (We never really thought about whether snails had tongues either, to be honest).

According to Dr, Gordon Port, senior lecturer at Newcastle University: “A snail will use its toothy tongue ­– called the radula – almost like a file, scraping off the softer parts of their food when eating. Their teeth normally get worn down by this action, so they’re replaced regularly.”

A “toothy tongue”

BBC Science Focus (cited below) describes some of the variations on these “toothy tongues:”

“There are also some (downright terrifying) radula variations. Species such as cone snails – that are mainly found in warm and tropical waters – have a venomous radula that is used to paralyse prey before eating.

In case you’re wondering, slugs also have a radula, which similarly are fitted with thousands of tiny teeth. Some predatory slugs, such as the Welsh ghost slug, have radulae with razor-sharp teeth – each about half a millimetre long – that are used to kill and eat earthworms.

Many squids also have a radula inside their mouth. As its throat passes directly through the brain, a squid’s toothy tongue is needed to break down food into tiny pieces. Because, let’s face it, a piece of crab knocking against your brain is bound to ruin supper.”

What do snails eat?

Snails eat at night for the most part – which we’re grateful for, since they sound like pretty messy eaters.

And Port told BBC that they’ll eat just about any organic matter, like young plants. “And some species, such as Moon snails, are even known to eat each other. But, mostly, any decomposing matter will do.”

As long as snails aren’t chewing your foliage, they can be good for gardens since they eat decomposing matter and then serve as food for other animals.

– WTF fun facts

Source: “Do snails have teeth?” — BBC Science Focus

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 12774 – A Tick Map for Public Health

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Scientists believe that releasing a “tick map” each year (or as often as needed) would be a great public health strategy to allow people to ward off tick-borne diseases. Now, researchers are trying to make it happen.

Why a tick map?

From hikers to vacationers, each summer and fall people head out to new locales without quite knowing the dangers that lurk in tall grasses and forests. These days, tick-borne diseases are spreading more rapidly than ever and it’s causing some big concerns for health professionals. Some of these diseases can be debilitating, and in many cases, a bit of Deet spray just isn’t enough to avoid the danger.

Enter the tick map. If a map of locations where ticks are common (and commonly associated with particular diseases) was available ahead of time, it would not only help raise awareness of the need to avoid ticks but help people take better precautions.

Knowledge is power, after all. But simply telling people there are risks out there does not lead to enough action to stop the spread of diseases that take major resources to treat.

How does a tick map work?

A tick map would involve some predictions, so researchers are still trying to come up with the ideal way of forecasting the locations. And it’s complicated.

According to Scientific American (cited below): “Many factors, not all of them well understood by scientists, shape where and when disease-carrying tick species will thrive—and if they are likely to carry a pathogen at all. Every year people are diagnosed with and treated for tick-borne illnesses such as Lyme disease, anaplasmosis, and Rocky Mountain spotted fever. For Lyme disease alone, the annual figure is nearly half a million, according to estimates from the U.S. Centers for Disease Control and Prevention. And that number is expected to rise as many tick species continue to expand their ranges.”

The only system we have now is relying on people to know where ticks may be a problem so that they can use tick repellant, wear long sleeves, cover their ankles, and perform tick checks on themselves and their pets.

But if we had a tick map, things might be different: “If hikers, for example, have a forecast indicating that the woods they are passing through are likely to have dangerous ticks, they can take extra steps to protect themselves with bug repellent, long sleeves and tight pant cuffs. Local health care providers can make sure they are looking out for symptoms of tick-borne illnesses. Local officials can advise citizens on how to take care outside during the danger season. But making accurate predictions is complicated. Many factors, not all of them well understood by scientists, shape where and when disease-carrying tick species will thrive—and if they are likely to carry a pathogen at all.”

The other cool thing about having a tick map is that it would show when risks are low, allowing people to relax some of those protocols when they aren’t necessary.

Why is it so hard to build the map?

Risk levels can be hard to gauge, however. Ticks need humid summers, enough animal hosts, and the right habitat, for starters. They don’t like cold winters and hot, dry summers. But there’s way more that goes into creating a predictive model that’s actually useful to people, including specific tick species that carry different diseases or thrive in slightly different environments.

To add to the complexity, we’re still learning about the other kinds of flora and fauna that are abundant in tick-heavy areas, such as a specific type of acorn that one type of tiny mouse feeds on – they’re common when ticks are abundant and they’re a reservoir for Lyme disease. All of those elements need to go into the model. And to top it off, we don’t entirely understand how Lyme disease works.

At the moment, the best data we have is only for one tiny area of the country. Other areas may need different predictive models. According to SciAm, “Data collection is one piece of that puzzle, but another is a better understanding of how ticks interact with host species, both human and nonhuman, and how the arthropods act as conduits for disease.”

So, in the meantime, cover up and check for ticks after a walk in the woods!

– WTF fun facts

Source: “The Quest for a ‘Tick Map’” — Scientific American

WTF Fun Fact 12771 – The Saraha Desert Forest Mystery

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Ok, trigger warning: There’s a high chance of getting Toto’s “Africa” stuck in your head by reading this post. But, the truth is, there used to be plenty of rains down in Africa. Enough to have made the Saraha Desert a rainforest.

It’s not a huge shock, since we know the Earth has gone through different climatic periods, but this was one far more recent and accounts for a more radical change than scientists ever could have imagined. In other words, it really takes a lot to turn a vibrant forest into a bone-dry desert, and this happened a mere 6000ish years ago! It’s pretty interesting.

How did the Sahara go from forest to desert?

So, what’s the deal here? Well, since we don’t have a time machine, we can’t know for certain. It could have to do with the tilt of the Earth’s orbital axis changing, it could also be part of a longer, larger pattern of transition.

African Humid Periods in the distant past meant….you guessed it…more rains down in Africa. In particular, northern Africa (which is where the Sahara is, in case you don’t have a map handy). But at some point, those rains went away.

As Smithsonian Magazine (cited below) explains:

“With more rain, the region gets more greenery and rivers and lakes. All this has been known for decades. But between 8,000 and 4,500 years ago, something strange happened: The transition from humid to dry happened far more rapidly in some areas than could be explained by the orbital precession alone, resulting in the Sahara Desert as we know it today.”

Cool use of archaeological data

We can see from archaeological data (which is not perfect, but is overwhelmingly in favor of showing past water and trees in certain areas) that the area was once forest, and even rainforest. But what’s also interesting – and seals the deal for most people – is that in this period there is also evidence of pastoralists. That means people were raising and herding animals. And you definitely can’t do that in a desert.

Are humans to blame?

If it wasn’t solely an axial issue (regarding the Earth’s tilt), some scientists believe that humans could have played a big role in changing the climate due to overgrazing.

There have been suggestions that the end of the humid period in northern Africa could have been brought about by humans letting domesticated animals eat up all the moisture-loving plants. They would have probably had to use fire as a land management tool as well. And that may have been enough to trigger the big change that turned the forest into a desert.

It’s not that easy, of course, but that’s the general idea. There are also hypotheses that humans had nothing at all to do with it. And neither one of those would be related to whether or not humans are affecting the climate currently, so it’s not a political discussion (thankfully). – WTF fun facts

Source: “What Really Turned the Sahara Desert From a Green Oasis Into a Wasteland?” — Smithsonian Magazine

WTF Fun Fact 12770 – Grapes In A Bottle Of Wine

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Have you ever wondered how many grapes are in a bottle of wine?

Well, it all depends on the type of wine you’re drinking, but typically it’s around 600-800. However, some bottles contain up to 1200 grapes.

Harvesting grapes for a bottle of wine

Protecting a vineyard from birds, bees, deer, and other pests that enjoy poking into and picking off grapes takes a lot of work. But if you’re able to get around ten good clusters, you’d be able to make at least one bottle of wine (although the wine-making process is pretty laborious for such a small payoff).

As grapes are harvested in the fall, imperfect clusters get tossed to the side. And many high-end vineyards will pick off each grape and try to inspect them individually to ensure they’re in good shape and free of pests that might change the taste of a wine (such as ladybugs).

The number of grapes in a bottle of wine may vary

You can’t make good wine out of just any old grapes. For example, concord grapes often get sold to big corporations such as Welch’s for grape juice (the non-fermented kind).

Wine grapes need extra help and aren’t sold at grocery stores. But if you want to get a sense of how many grapes are in a bottle of wine, think of it this way – most bags of grapes at the grocery store have about 3 – 4 clusters inside. So it would take at least three bags to make just one bottle of wine.

So, if three bags of grapes costs you a few dollars, you know that wine you’re getting at the under $10 price point is probably not all that special (though it can still be tasty!).

Vineyard vines

A vineyard can produce anywhere from 2 to 10 tons of grapes per acre, depending on the farming methods they employ. For example, organic vineyards will produce close to 2 tons per acre.

According to VinePair (cited below): “The output level of a vineyard is where price and quality get determined. A vineyard that produces less grapes per acre results in grapes that are usually fuller in flavor and more concentrated, whereas a vineyard with a large output generally creates grapes whose juice is watery, which means it ultimately will take more grapes to create a flavorful wine.”

When we’re talking about grapes per bottle, we’re looking at around 700+ bottles per acre (or around half a million grapes).

So if you’re buying wine from a small estate, chances are they are producing far less wine and are typically charging more. Of course, if the vineyard had a famous brand name attached, you’re also paying for that. –WTF fun facts

Source: “How Many Grapes Are Inside Your Bottle Of Wine?” — VinePair

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