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.
Why Are Orcas Attacking Boats? Experts Weigh In
Leopard Seals Are Apex Predators of the Antarctic
Humpback Whales Have Made an Amazing Comeback From Extinction
The Largest Bat in the World Has a Wingspan Over 5 Feet
Baby Bats Babble With Moms, Hinting at Human Language Development
Fruit Bats Are the Best Pollinators (and Suppliers of Tequila)
Alaska's Kodiak Bear Is One of the Planet's Biggest
What's the Difference Between a Brown Bear and a Black Bear?
How Polar Bears Work
Gray Wolves Will Get Federal Protection Again in Much of U.S.
The Serval Stands Tall and Jumps Like A Champion
Are Dingoes Dangerous (and Did One Really Eat a Baby)?
Bison vs. Buffalo: What's the Difference?
Lamb vs. Sheep: Do You Know the Difference?
Dik-dik: The Tiny Antelope With the Embarrassing Name
The Happiest Animal on Earth Is the Quokka
What Do Possums Eat? Most Things, It Turns Out
What's It Like Inside a Kangaroo's Pouch?
The Tarsier Is One Weird Primate, and Yes, We're Related
Marmosets Are Tiny, Upper Canopy-dwelling Monkeys
Why Do Gorillas Beat Their Chests?
Squirrels Can Be Left- or Right-handed
Rat vs. Mouse Identification: Which Is Eating Your Cheese?
Chipmunk vs. Squirrel Sizes, Habitats and Characteristics
What Is the Biggest Cat in the World? Top 9 Species in the Wild
Cheetah vs. Leopard: Can You Spot the Differences?
Bunny vs. Rabbit: Is There a Difference?
Learn More / Page 4
Whaddya get when you cross a lion and a tiger? Yep — you get a liger, of course. But why are they considered controversial?
By Wendy Bowman
The proverbial "king of the beasts," lions are second in size to just one other cat in the world, the tiger. But a lion's biggest fear? Tangling with a porcupine the size of a small dog.
By Mark Mancini
Reindeer are, of course, best known for their main gig om Christmas Eve every year, but there's more to them than just their flying and sleigh pulling prowess.
Advertisement
Beaver attacks get a lot of media attention but are beavers really crazed killers that we should be afraid of? And what good do they really do?
They look so cute and fluffy, but koalas have a fierce side too. Still, their biggest threat to survival is mankind.
By Alia Hoyt
Gorillas can live to be about 35 to 40 years old and are much gentler (and much sleepier) than you might think.
The female emu may lay the eggs, but the male emu does all the caretaking. And that's just one fascinating thing we learned.
Advertisement
They're the cutest and most curious masked mammals around. But they also have a reputation for being a nuisance. Here's everything you need to know about the raccoon.
By Meg Sparwath
Sea otters are adorable, back from the brink of extinction and will totally bite you.
Move over Dracula. These fish, birds and bats really are the vampires of the animal world — and they do need to eat (or suck) blood to sustain life.
By Mark Mancini
Manatees are so gentle and sweet they'll break your heart, but in 2021, there have been more manatee deaths than in any year in previously recorded history. Why are these gentle giants dying in such unprecedented numbers?
Advertisement
It turns out that bobcats do just fine if not actively hunted by humans.
The wars between mink species and humans quietly rage worldwide.
Though ol' Wile E. never did catch the Road Runner, coyotes are some of the most ingenious and adaptable animals on the planet.
These impressive and intimidating animals have an illustrious past that helped them wend their way through America and settle in the heartland of the South.
By Mark Mancini
Advertisement
These berserker weasels are the ultimate cold weather survivors — cagey, smart and omnivorous.
Groundhogs don't actually make great weathermen, but they are pretty cool in every other respect.
Kinkajous, or honey bears, are generally docile creatures, but they definitely don't mix well with humans.
Jackals, formidable members of the canine family, are often portrayed in traditional world folklore as wily tricksters, up to no good. They are actually brilliant survivalists.
Advertisement
These adorable marsupials look as sweet as their name. But what, exactly, are sugar gliders?
By Jamie Allen
Those red butts on baboons do serve a purpose, sort of, but it's probably not quite what you think.
Orphaned Bornean orangutans need all the help they can get — the Borneo Orangutan Survival Foundation steps in to teach them the art of survival.
It's the job of the huge grizzly bears at Montana's Grizzly and Wolf Discovery Center to test the everything from coolers and trash cans to food storage containers.
Advertisement
Clearing land with goats rather than machinery is eco-friendly, effective and adorable.
Fisher cats aren't actually cats, but cat-sized members of the weasel family, and their favorite snack is — yikes — the porcupine.