Mammals are perhaps the most recognized type of wild animals on the planet. Check out our articles on well-known mammals like elephants, giraffes and panda bears, as well as some you might not know like pikas and tapirs.
Leopard Seals Are Apex Predators of the Antarctic
Humpback Whales Have Made an Amazing Comeback From Extinction
9 Enormous Facts About Sperm Whales, Gigantic Creatures of the Sea
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
What Do Possums Eat? Most Things, It Turns Out
What's It Like Inside a Kangaroo's Pouch?
Do Kangaroos Really Box?
The Tarsier Is One Weird Primate, and Yes, We're Related
Marmosets Are Tiny, Upper Canopy-dwelling Monkeys
Why Do Gorillas Beat Their Chests?
Rat vs. Mouse Identification: Which Is Eating Your Cheese?
Chipmunk vs. Squirrel Sizes, Habitats and Characteristics
How Long Do Squirrels Live?
Think you can handle cheetah vs. leopard identification? Despite the similar coats, these big cats are built for very different habitats and hunting priorities.
Learn how to identify coyote vs. wolf tracks, where you can expect to find the species and how their behaviors differ.
By Marie Look
The world's largest wolves weigh up to 175 pounds (79.4 kilograms) and measure up to 6 feet (1.8 meters) in length.
The pink fairy armadillo looks like something out of a children's book and is so rare that very few people have ever seen one.
By Carrie Tatro
You don't want an animal living in your house that's smarter than a raccoon and never rests.
An orangutan who could unscrew bolts to bust out? A gorilla who climbed the vines out of her enclosure to just roam the zoo? These are wild animals, and these are their wild escape stories.
Pine martens are elusive and love to stay hidden in deep forests, but with strong claws, they are great climbers and hunters.
By Katie Carman
Caracals have really cool ears and can also jump 10 feet in the air from a seated position.
From the four-headed male reproductive organ to hosting the world's largest flea and sporting a body covered in spiny hairs, this cute little creature takes the cake for mammalian weirdness.
By Wendy Bowman
The stoat and the weasel might look alike, but they're not the same animal. The stoat is a serious predator that kills its prey like a vampire!
By Wendy Bowman
The anteater has one of the strangest-looking noses in the animal kingdom, a truly fabulous hairdo and a tongue that reaches places never meant to see the light of day.
By Wendy Bowman
The female emu may lay the eggs, but the male emu does all the caretaking. And that's just one fascinating thing we learned.