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.
Fainting goats don't really faint -- their muscles tense up and they fall over when they get scared. But why would anyone want a fainting goat?
Contrary to popular belief, bats don't go around biting people and sucking blood. Bats got a bad reputation from the Dracula stories, but they actually prefer eating insects over blood. Find 13 incredible bat facts only at HowStuffWorks.
Bats are often found sleeping upside down during the day. They roost in secluded areas such as hollowed out trees and caves. Have you ever wondered why bats sleep upside down? Find out the answer to this question in this HowStuffWorks article.
Monkeys and apes have lots of similarities, but they're not the same animal. In a lot of ways, it all comes down to the tail.
Until now, no one has documented a definite case of chimpanzees using tools to hunt in the traditional sense. Find out what a new study on chimpanzees may reveal about human evolution.
Did you know you conserve energy every time you walk across a room? You do, in evolutionary terms at least. Find out how and why humans began walking upright and what this has to do with our body's energy use.
Cow flatulence produces the greenhouse gas methane, which is linked to global warming. Find out how scientists are working to reduce cow flatulence in livestock.
If you're wandering through a thrift store and happen upon a large mass of some sort of waxy substance, take a closer look. It could be the rare "floating gold" of the sea: whale vomit. Find out whether cetacean upchuck can help you retire.
Despite their monumental proportions, the most phenomenal thing about whales isn't how big they are: It's the way they live. Whales are mammals -- warm-blooded, air-breathing creatures -- but they spend their entire life in the ocean. Find out about these awe-inspiring creatures.
Think you know what bats are all about? Chances are you're operating under at least a couple of misconceptions. Sort out the facts from the myths and see what makes bats so unique.
Do whales and dolphins sleep? I know they have to come to the surface of the water periodically to breathe, so wouldn't they die if they dozed off?
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