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About Animals:

Animal Kingdom

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Invertebrate Animals

Vertebrate Animals

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Mammals have several unique characteristics that differentiate them from other animals. Most mammals have hair, or fur, covering their body. They are also capable of regulating their body temperature. The mammals metabolism controls heat production, and the sweat glands help cool the body. These allow the mammal to maintain a constant body temperature, regardless of the environmental temperature. One other difference is that mammals give birth to fully formed babies, and the female mammals produce milk to feed their young.

Most mammals walk on 4 legs, with only the humans walking upright on 2 legs. Aquatic mammals have flippers, or fins, for swimming rather than legs. Common mammals include: primates, such humans and monkeys; marsupials; rodents; whales; dolphins; and, seals.

Click on the name or picture of the mammal below for more information.

koala bear



Mammal Videos


If you are interested in more information mammals, check out our mammal video collection.

Web Sites about Mammals:

Hall of Mammals at the University of California Museum of Paleontology

Mammal Fossils at the Russian Paleontology Museum

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