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.
We all know that the humps on a camel help it to survive in the harsh desert environment. What exactly is inside the hump of a camel? Does the hump store water? Find out the answer to these questions in this article from HowStuffWorks.
Humans have a peculiar knack for naming animals based on their doppelgangers instead of their biology. Sea horses aren't really horses is and koala bears aren't exactly bears. So what's the deal with mountain goats versus true goats?
Tasmanian devils are scrappy little marsupials with jaws as strong as tigers'. But a deadly form of cancer is threatening to annihilate the species. Can scientists save the devils before it's too late?
A long, long time ago, lemurs lived all over the world. But something happened to kill them off — everywhere except in Madagascar. How did the island protect them from extinction?
Lions aren't known for their tendency to pass up a big, juicy steak. So if you're an African buffalo, how can you keep your hide intact?
Ever heard that the grass is always greener on the other side? While we may think of it as a quaint proverb, wildebeests abide by it. In fact, their entire lives' purpose is dedicated to finding the greenest, freshest patch of grass.
Remember practicing the stop, drop and roll drill in school? If you were an armadillo, rolling up into a tight little ball would be second nature. But how do these armored creatures tuck every last square inch of themselves into a sphere? And why?
Whether you're sleeping on a water bed or napping during a rainstorm, water has a calming effect. Walruses also make use of soothing waves, but why don't they drown when catching submerged shut-eye?
Those of us who wear glasses will just stew in our own astigmatic juices if we're called "four eyes." Nearsighted rhinos, however, use their pointy horns for payback.
A hippo doesn't need to lumber to the local drug store and buy sunscreen; it can make its own. And the method is pretty ingenious.
The bobcat and lynx may not be much larger than your house cat lounging on the couch, but these felines rely on specific adaptations to survive in the wild.
Porcupines know nothing of bad hair days. These walking pin cushions use their prickly "hairs" to impale any animal that may pose a threat to their well-being.
If your home has termites and the exterminator is booked, you might want to send in an anteater or aardvark. Though both these animals love insects, they're two totally different species.
Perhaps just as puzzling as the Rubik's Cube (though not as colorful), the purpose of wombat scat's geometrical shape seems mysterious. So what's the scoop on wombat poop?
Ever since word spread about the seven deadly sins, sloths have been getting a bad rap. These sluggish tree-dwellers conserve energy by stopping to smell (and eat) the roses.
If you've been sprayed by a skunk, you probably ended up in a bathtub filled with tomato juice. But is there any truth to this treatment, or should we debunk the skunk?
As issues like drought make headlines, the topic of water conservation has become critical. Perhaps we should look to the camel for guidance as this desert-dweller saves every last drop.
If Mother Nature has a sense of humor, surely the platypus is one of her punch lines. This mammal might look funny, but one of its offensive adaptations is no laughing matter.
Storybook villains always seem to have warts. These unsightly growths may be indicators of wickedness in the fairy-tale world, but they're crucial features for some hogs living in the animal kingdom.
With their built-in masks and ability to snatch food, it seems raccoons were meant for a life of crime. But do these thieves wash away the evidence by rinsing food in water?
Mammals are a ubiquitous and diverse class of animals. Learn all about mammals, including hippopotamuses, killer whales, sugar gliders and more, by viewing this mammal image gallery.
Prairie dogs may look cute and cuddly, but are these rodents harbingers of deathly plague? Since there aren't any underground pharmacies in prairie dog towns, will disease wipe out these animals?
Besides our genetic similarities, gorillas also share our love of getting a good night's sleep -- except that their alarm clocks come in the form of dangerous predators and poachers.
If Bullwinkle had made the move up north, he would have felt right at home. Though moose in Alaska don't have squirrel sidekicks, they do take advantage of their urban surroundings.
If the animal world were school, otters would be those kids who never leave the playground. Always begging for five more minutes of recess, otters take playtime very seriously.