Glossary

Mammals

A group of animals that give live birth and nurse their young. Technically, the adaptation that scientifically defines mammals is the use of three bones to form the inner ear. These bones came from the jaw in more primitive animals.

Humans, rabbits, bats, and whales are all examples of mammals. Birds, lizards, and fish are not mammals. All mammals are also vertebrates, tetrapods, and amniotes.

Mammoths are one of the most famous extinct mammals.

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Mammals