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Of all the thousands of species of mammals, only three lay eggs. The two species of echidna and the platypus are the only egg-laying mammals (monotremes).Echidnas lay their egg directly into a pouch...
The only mammals which lay eggs are the small group known as monotremes. The smallest egg-laying mammal, or monotreme, is the platypus. The platypus weighs, at most, 1.7kg while the echidna can...
Yes. They are called monotremes. The only known monotremes are the platypus and short-beaked echidna of Australia and the long-beaked echidna of New Guinea.