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When an animal is mobile or relatively mobile from the moment it is born they are said to be Precocial. Some Familiar examples of these animals are ungulates, Guinea pigs, some birds, and hares.

I find this a difficult question to answer with certainty; Birds make up a large number of precocial species with the number being ~1000 in total (10%)

Other notable groups include these:

3 species of elephants

6 species of Guinea pig

32 species of hare

89 Cetaceans

146 Ungulates (60%)

230 Histricognath rodents

A conservative estimate for the number of mammal and bird species which are precocial to super-precocial would be approximately 1600.

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11y ago

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