There are roughly 5,000 species of mammals, animals within the class Mammalia. That means all those animals have vertebrates, warm blood, hair or fur, they breathe using lungs, and they feed their ...

As for other monogamous area mammals, perhaps there is no better example than the beaver, which pairs for life (although genetic testing has revealed a scandalous amount of sleeping around).

Over four decades have passed since the last definitive work on Ohio’s mammals. In 1981, "A Guide to the Mammals of Ohio" was released, with detailed accounts of 54 species of mammals.

Mammals also have more developed brains than other types of animals. Humans are mammals. This question often gets confusing because some sharks are "viviparous," meaning they give birth to live young.

One of the ancient mammals. The fossils were discovered in Mongolia and China. Chuang Zhao. Now, the new species of shuotheriid, Feredocodon chowi, reveals that these animals had teeth more ...