13 Fun Facts About Ferrets

iStock.com/JuergenBosse
iStock.com/JuergenBosse

Happy National Ferret Day! In honor of the holiday, brush up on your knowledge about everyone's favorite (and longest) polecat-like pet.

1. Ferrets have been domesticated for a quite a while.


Public Domain, Wikimedia Commons

It is unclear exactly when ferrets were first domesticated, but the critters have a long and storied history. Greek scholars—Aristophanes in 450 BCE and Aristotle in 350 BCE—wrote about a ferret-like animal. Some lore asserts that ancient Egyptians even kept them as pets, but the absence of ferret bones in explored tombs casts doubt on that claim. Remains have been found in a medieval castle in Belgium, but there is no mention of the pets in any contemporary writings. It's also possible that the ferret was exclusively a lower-class pet, which would explain the lack of documentation.

In the late 15th century, Leonardo da Vinci painted Cecilia Gallerani holding a weasel-like creature. Although the animal has been dubbed an ermine, many scholars believe the animal is actually a ferret.

2. They are related to polecats.


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Ferrets are the domesticated subspecies of European polecats. They can easily interbreed to produce offspring that are very similar to domestic ferrets.

3. When threatened, ferrets will dance.

In the wild, ferrets and stoats perform a hypnotic dance that sends their prey into a trance. Domestic ferrets also perform this dance, but they use it for play instead of hunting. They arch their backs, puff their tails, and move from side to side. This rug-cutting is usually a sign that the ferret is happy and having fun.

4. Black-footed ferrets almost exclusively eat prairie dogs.


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Wild black-footed ferrets, or American polecats, live in central North America and feast on unsuspecting prairie dogs. Scientists discovered that in South Dakota, 91 percent of the black-footed ferret's diet consisted of prairie dogs [PDF].

Unfortunately, their main source of food has bigger problems than being eaten: The Black Death. The plague is no longer a worry for most humans, but it has a tendency to wipe out whole colonies of black-tailed prairie dogs. This threat is a real issue for the endangered black-footed ferrets, which perish without their favorite food. Luckily researchers have found a vaccine that could help keep the tiny rodents healthy. Testing is currently underway to see if the vaccine works in the wild.

5. A group of ferrets is called a business.


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Now that’s a professional pet!

6. Ferrets can be used to hunt rabbits.

Rabbit hunting with ferrets is a popular sport in England. The ferrets run into rabbit holes to run the prey out of hiding. When the rabbits dash from their homes, human hunters trap them in nets. The tiny hunters wear ferret finder collars so that if they corner a rabbit underground, their owners can come to their rescue with a shovel. 

7. They can team up with falcons.


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Falconers employ ferrets in a similar role; the only difference is that the ferrets are used to bring the prey to the falcons. The two animals make a great hunting team.

8. Some ferrets have jobs.


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Known for their love of burrowing, ferrets can put their skill at running through pipes to a variety of professional uses. When wires cannot be pushed through tubes or tunnels with rods, the tiny critters can step in. They are known for pulling wire through underground tunnels, and even helped lay wire for London's Party in the Park concert im 1999.

One famous ferret named Felicia helped clean pipes at Fermilab's Meson Laboratory in 1971. A swab connected to her collar allowed her to clear away unwanted debris. Although Felicia only cost $35, she likely saved the lab thousands of dollars.

9. Ferret racing is a popular sport.

Ferret racing is a popular sport in London that involves competing ferrets racing through drainpipes. A small section of the pipe is removed and replaced with chicken wire so viewers can know when the pets are half-way through. Apparently, the animals thoroughly enjoy the games, and the company of their fellow ferrets.

10. Scammers have sold ferrets on steroids as fancy poodles.

If you are looking to get a tiny exotic dog, make sure you’re not actually buying a ferret. In 2013, some Argentineans were being tricked into buying fake miniature poodles. Ferrets were given steroids and new haircuts before being passed off as tiny purebred dogs. The owners often didn’t realize they had accidentally bought drugged ferrets until visiting the vet for shots.

11. Females can die if they go too long without mating.


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Unspayed females need to mate or run the risk of producing too much estrogen. The overproduction can lead to estrogen toxicity, or hyperestrogenism. This condition can lead to anemia, clotting, and death.

12. Scientists fiddled with a ferret’s brain and made a startling discovery.


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In the 1990s, neuroscientists at MIT reconfigured baby ferrets' brains so that the critters' retinas were connected to their auditory cortexes. They expected the ferrets to go blind, but miraculously, they readjusted so that the auditory cortex worked like the visual cortex; they could see using the part of the brain normally used for hearing. This discovery showed that the brain is adaptable and makes use of what’s available. ''It's just waiting for signals from the environment and will wire itself according to the input it gets,'' Dr. Jon Kaas, a professor of psychology at Vanderbilt University, told The New York Times in 2000.

13. They love to jump.

But sometimes they land in some unfortunate places.

This article originally ran in 2015.

9 Tiny Facts About the Chevrotain

Dave Curtis, Flickr // CC BY-NC-ND 2.0
Dave Curtis, Flickr // CC BY-NC-ND 2.0

With a round body, spindly legs, and long fangs, this odd creature gives the platypus a run for its money. Also known as the mouse deer, chevrotains are shy and mysterious, and not much is known about them. But here's what we do know.

1. Chevrotains are not mice, nor are they deer.

Lesser mouse deer or chevrotain
BirdHunter591/iStock via Getty Images

At first glance, these animals look like a weird mash-up of a deer, a mouse, and a pig. Mouse deer share a suborder with deer (Ruminantia) but are not considered “true deer.” They have their own family, Tragulidae.

2. Chevrotain species vary by weight.

Mouse deer in Thailand
MonthiraYodtiwong/iStock via Getty Images

These creatures are way smaller than any deer. Depending on the species, a chevrotain can weigh anywhere from 4 to 33 pounds. The smallest species is the lesser Malay, while the largest is the water chevrotain. No species gets any larger than a small dog.

3. There are a lot of different kinds of chevrotains.

Mouse deer
aee_werawan/iStock via Getty Images

This tiny animal comes in many variations. The family has been classified into two genera: true chevrotains (Hyemoschus) and the mouse deer (Tragulus). The spotted mouse deer are still very mysterious, so scientists have placed them in their own genus called Moschiola. Despite being categorized in different genera, they all share a similar look.

4. Chevrotain fangs are fiercer than Dracula's.

Chevrotain in a woodland
BirdHunter591/iStock via Getty Images

Open up a chevrotain’s mouth and you’ll find two long fangs. They're especially elongated in males, which use the needle-like canines to stab each other. Thanks to an extra thick coat and robust muscles around the neck and rump, these adorable fighters are protected from bites during combat.

5. Some consider the chevrotain a living fossil.

Chevrotain sticking its tongue out
Josh More, Flickr // CC BY-NC-ND 2.0

Chevrotains are the most primitive of ruminants. Like deer and similar hoofed animals, they have even-toed hooves and a multi-chambered stomach. But unlike deer, chevrotains have a three-chambered stomach instead of four, and they lack horns or antlers. They haven't changed or evolved much during their time on Earth. Scientists see them as an evolutionary link between ruminants and non-ruminants.

6. Taking a dip is the water chevrotain's best defense.

The water chevrotain is known for its ability to dive underwater when it senses a predator nearby. The miniature swimmers scrunch up and walk on the bottom of rivers and streams to prevent being picked up by the current. If there are any reeds or plants around, the animals will grab them to stay tethered. Chevrotains are able to hold their breath for about four minutes.

While hiding from hungry predators, the water chevrotain can reemerge to get some air before diving back down. Still, the animal tires easily, and can only swim for short periods of time.

7. Childbirth is an expedited experience for chevrotains.

Chevrotain in a woodland
aee_werawan/iStock via Getty Images

After getting pregnant, a female chevrotain will carry the offspring for five to nine months, depending on the species. The baby can usually stand on its own within one hour of being born. Mothers will visit their young periodically for feedings and stand on three legs while nursing.

Chevrotains are known for their ability to be almost continuously pregnant—greater and lesser Malay mouse deer can mate again only a few hours after giving birth.

8. Chevrotains are shy wallflowers.

Chevrotain in a woodland
cowboy5437/iStock via Getty Images

Due to their small size, chevrotains are preyed upon by many different animals. Lacking antlers or horns for protection, the tiny animals are forced to lead secluded lives. Some species are nocturnal and very rarely seen. Chevrotains are very shy and often graze alone, only coming together to mate. They communicate with a series of smells and noises; this timid behavior makes it difficult for scientists to study them.

9. Chevrotain hooves make a lot of noise.

Chevrotain in a woodland
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Although normally peaceful, a male will angrily beat his hooves when agitated—they can stomp around four to seven times a second. This “drum roll” technique wards off predators and warns other chevrotains in the area that there’s danger.

Additional sources: "Water Chevrotain," Amazing Animals of the World; "Chevrotains (Tragulidae)," Grzimek's Animal Life Encyclopedia; Mammals IV, Gale Virtual Reference Library

'Lost Species' of Tiny, Rabbit-Sized Deer Photographed in Vietnam for the First Time in 30 Years

Global Wildlife Conservation
Global Wildlife Conservation

The silver-backed chevrotain, also called the Vietnamese mouse-deer, is elusive. It's so elusive that scientists had feared it was extinct after none had been photographed for decades. But as The Washington Post reports, the first images taken of the mammal in nearly 30 years prove that the species is still alive in the woods of Vietnam.

No larger than small dogs, chevrotains are the tiniest ungulates, or hoofed animals, on Earth. They have vampire-like fangs and skinny legs that support their bodies. Silver-backed chevrotains are characterized by the silver sheen of their tawny coat.

The tiny population native to Vietnam has been devastated by poachers in recent decades. That, and the animal's natural shyness, make it incredibly difficult to study. Before this most recent sighting, the last time scientists had recorded one was in 1990.

Global Wildlife Conservation, the Southern Institute of Ecology, and the Leibniz Institute for Zoo and Wildlife Research teamed up in hopes of documenting the lost species. Researchers interviewed residents and government forest rangers in the Vietnamese city of Nha Trang about the silver-backed chevrotain, looking for tips on where to find one. Residents said that while populations had been hit hard by hunting, the animals were still around.

Based on this local ecological knowledge, scientists set up three camera traps in the Vietnamese woods. In just five months, they captured 275 photographs of the little mouse-deer. They then installed 29 additional cameras and snapped 1881 new images in that same length of time.

“For so long this species has seemingly only existed as part of our imagination," Global Wildlife Conservation associate conservation scientist An Nguyen said in a statement. "Discovering that it is, indeed, still out there, is the first step in ensuring we don’t lose it again, and we’re moving quickly now to figure out how best to protect it.”

Now that a silver-backed chevrotain population has been located, researchers plan to conduct the first-ever comprehensive survey of the species. Once the data is collected, it will be used to build a plan for the species' survival.

[h/t The Washington Post]

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