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Mammals
Scientifically-speaking there are 11 mammal groups, and most Mammals are warm-blooded, have body hair, give live birth and nurse their young with milk from mammary glands. Check out these articles about all kinds of mammals.
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Red Pandas Are Not the Lesser Pandas
Despite being known as the "lesser panda," the red panda is so totally cute, we simply can't use that moniker. No way. Not now. Not ever.
6 Wild Cats Still Found Roaming the U.S.
As much as human beings have encroached on wildlife over recent decades, there are still several species of big cats living wild in the U.S. today.
Meet the Ocelot: The Cutest Little Big Cat
The ocelot may look like a slightly wilder version of a domesticated tabby cat, but they are three times the size of house cats, much fiercer and, though abundant in some areas, still endangered.
Rules for Keeping a Pet Chinchilla
These adorable little rodents are popular as pets, but they require some special care.
6 Reasons Monkeys Should Never Be Pets
It may seem like just the cutest thing in the world to you, but owning a pet monkey is a really bad idea. Here's why.
How Did Weasels Get Such a Bad Rap?
These little critters are super cute, so why do they have a reputation for being one of the worst of the mammal world?
Alpacas Are Totally Not Llamas
Alpacas are highly intelligent and they're not pets. They require a lot of research and specialized knowledge if you plan to bring a few home.
Honey Badgers Don't Care Because They're Ferocious
Because most of what we know about honey badgers comes from a three-minute comedy video, there are a lot of misconceptions about these wily weasels.
Hedgehogs: Adorable, But Do They Make Good Pets?
Sure, hedgehogs are cute as heck, but do you think one really wants to live in your house?
The Great Squirrel Debate: To Feed or Not to Feed?
There doesn't seem to be much of a gray area. Most people are a hard yes or yard no.
Opossums: So Darn Ugly They're Adorable
Sure, opossums eat out of your trashcan, but they're also strange little superheroes.
Why Is Cashmere So Expensive?
Your favorite cashmere sweater is super-soft and luxurious. It probably cost you an arm and leg, too. Here's why.
Golden Snub-nosed Monkeys Share Nursing of Young
A group of researchers in Shennongjia National Nature Reserve discovered that these female monkeys are essentially happy to feed each other's offspring.
Flying Squirrels Glow Hot Pink in UV Light
Perhaps it's a mating signal. Or meant to confuse owls and other predators. Or maybe it's just for looks.
Elephants Have a Special Alarm Sound: 'Humans! Run!'
Elephants make a specific sound to warn each other of nearby humans.
Bears Adjust to Repeated Drone Exposure, Study Finds
This could mean good news for conservation and anti-poaching efforts if other species follow suit.
Dolphins Sleep Half a Brain at a Time
A dolphin doesn't breathe automatically, so during sleep, one side of its brain stays awake to ensure the mammal rises to the surface and breathes.
Why Penguin Feet Don't Freeze
Penguins stand for months on the coldest ice in the world without their feet freezing, thanks to special blood circulation.
Why Do Monk Seals Get Eels Up Their Noses?
It looks excruciating, and nobody knows exactly why it happens.
Battle of the Best Sonar: 'Team Dolphin' vs. 'Team Bat'
Before you declare which team you're on, we've got the breakdown on this auditory battle royal.
5 Cool Cats in the Wild
When we think of big cats in the wild, we most likely think of lions and tigers. But there are so many more amazing wild cats you've probably never even heard of. Here are five.
Humpback Whales Start Simpler Songs as Old Ones Get Too Complex
Do humpback whales get tired of singing the same old song, or do they simply start over when it gets too complicated?
Wolves' Return to Yellowstone a Boon for Streams
A first-of-its-kind study reaffirms why wolves are vital to the health of our ecosystem.
Buffalo Roundup Evokes Images of the Wild West
The annual bison roundup in South Dakota's Custer State Park is a spectacle full of cowboys, horses and of course wild buffalo, all set against the backdrop of the rolling Black Hills. It's also about as Americana as you can get.
Scientists Figure Out Why Elephants' Skin Is So Cracked
Scientists have known for a long time that elephants have no sweat glands and keep cool through slinging mud on their skin. But they didn't know what made the skin so wrinkled — until now.
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