Mammals That Lay Eggs
The only two mammals that lay eggs are platypuses and echidnas, and both reside in Australia. These animals (platypuses and four species of echidnas) are the last two monotremes on Earth.
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Key Facts In This Video
Platypuses and echidnas are the only two mammals to lay eggs. 00:10
Platypuses and echidnas are the only survivors of the monotremes egg laying family that once ruled Australia. 00:22
Male platypuses have hollow spurs in their hind legs that are venomous enough to kill a dog. 01:29
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