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Mammals are boys and girls. Mammals are classified based on certain characteristics they have. Some characteristics mammals have are: 1. They have to have at least some hair on their body. 2. The females have to have nipples that they feed their young milk with. 3. And, other than monotremes (platypus and possums and other animals), they have to give live birth to their young. So therefore, all humans are mammals. Cats, dogs, hamsters, and all other animals you can think of that have all three characteristics, are mammals.

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13y ago

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