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Quite aimply, echidnas and platypuses are mammals. They are warm-blooded, unlike cold-blooded reptiles, with a covering of fur, rather than scaly skin.

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How do spiny anteaters differ from reptiles?

Spiny anteaters, more correctly known as echidnas, are mammals, not reptiles. Although they are one of two types of monotremes (egg-laying mammals), they have all the other characteristics of a mammal. They have skin covered in fur and quills, not scaly skin like reptiles have. The primary difference is that they feed their young on mothers' milk. This is the defining characteristic that classifies them as mammals.


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How do born animals differ from animals that are hatched from egg?

Born animals are mammals and eggs can be from birds, reptiles, amphibians and two types of mammals, the platypus and the echidna.


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