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Vertebrates are animals with backbones. Not all vertebrates are mammals, however. Vertebrates also include reptiles, amphibians, birds, and fish. Mammals do constutute a substantial number of vertebrates, but only a small fraction of the total species.

Mammals include:

monotremes (platypus,echidna)

marsupials (kangaroo, opossum)

marine mammals (whales, dolphins)

semi-aquatic mammals (seals, sea lions)

bats

shrews, moles, and rodents

hoofed animals

felines, canines, and bears

primates (apes, monkeys, man)

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9y ago

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