Science

What makes something a mammal?


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There are several characteristics shared by mammals. The most well-known include: live births, lactation, and hair.

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A mammal is warm blooded, has a backbone, has hair or fur, bears live young, and females excrete milk for nourishment of the young.

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Oxford dictionary defines a mammal as a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young.

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