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
The Eurasian Lynx Can Take Down Prey Larger Than Itself
Clouded Leopard Has Proportionally Largest Teeth of All Cats
How the Snow Leopard Survives Harsh, Frigid Temperatures
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 2
Though it's true that joeys poop in their mother's pouch, also known as the marsupium, it's still a pretty cozy place to spend the first few months of life.
Never heard of the tarsier? Well it's one of the smallest primates in the world but has some of the biggest bug eyes you've ever seen.
Leopard seals are the second largest species of seal in the Antarctic after the southern elephant seal. They're fast, powerful and eat basically anything that moves. Their only natural predator? The killer whale.
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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
Marmosets are some of the smallest monkeys in the world and are found primarily in the forested areas of central Brazil. And the males support their mates in a very unique way.
A federal judge reversed a Trump administration ruling that removed the gray wolf from the Endangered Species Act. Here's why.
By Logan Smith
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Kodiak bears are some of the largest bears in the world and live only in the islands of the Kodiak Archipelago in Alaska.
Hibernating mammals like ground squirrels can build some muscle mass during their big sleep, with the help of gut bacteria.
Pallas's cats appear cantankerous, in part due to their flat faces and large, owl-like eyes with round pupils.
By Katie Carman
The boxing kangaroo as a symbol of the Australian fighting spirit dates back to the 1890s, but what's the truth? Do kangaroos actually box?
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Scientists have found striking parallels between the babbling produced by greater sac-winged bat pups and the babbling baby sounds of human infants.
Leucistic squirrels are rare, but Brevard, North Carolina has a thriving population.
You read that right. Fruit bats are instrumental in pollinating hundreds of plants, including the agave, a key ingredient in tequila.
By Mark Mancini
With a little pig snout and the locomotion of a kangaroo, these tiny desert rodents hardly ever drink water and rarely urinate.
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Humpback whales can be as long as a city bus and weigh as much as two. They love to breach and water slap with their fins and tails, making them a perennial favorite for whale watchers.
By Katie Carman
It's a behavior synonymous with gorillas — beating the chest. But why do they do it? Researchers think they've figured out what the purpose is behind that pounding.
They look a lot like beavers and the two rodents have a lot in common. But muskrats are their own species with their own signature scent.
By Meg Sparwath
Badgers love to dig — one den, or "sett," in southern England is thought to cover a territory of over a square mile and have up to 100 entrances.
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Red squirrels have a big attitude, which might have to due with their small size. They have to act big. And they do so with noisy and aggressive behavior.
By Mark Mancini
When threatened, the slow loris licks venom secreted from a gland under its arm. Licked and loaded, the loris is ready to poison an attacker with a bite.
There are over 60 species of langur in the world, all of which eat a plant-based diet and most of which burp a lot.
By Wendy Bowman
These chunky little guys aren't dogs at all. They're actually part of the rodent family, and they're shockingly smart.
By Meg Sparwath
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The name dik-dik comes from the repetitive 'dik' sound the tiny female dik-dik makes when she feels threatened.
Servals have long legs and necks, which allow them to spot prey over the tall grasses of the savanna, but their huge ears give them their best weapon — an acute sense of hearing.
By Mark Mancini