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.

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The bobcat and lynx may not be much larger than the house cat lounging on your couch, but these felines rely on specific adaptations to survive in the wild.

By Jennifer Horton

As much as human beings have encroached on wildlife over recent decades, there are still several species of big cats living wild in the U.S. today.

By Michelle Konstantinovsky

Wallabies and kangaroos may look alike, but they're not identical marsupials. We'll tell you how to determine which is which.

By Jennifer Horton