They are the only group of living mammals that lay eggs, rather than bearing live young Monotremes do not produce milk through nipples but through secretions in mammary glands on their skin. The extant monotreme species are the platypus and the four species of echidnas.
5 Mammals That Lay Eggs: Guide to All Monotremes | Everywhere Wild
Learn about the only mammals that lay eggs, called monotremes, and their unique features and habitats
Discover the platypus, the only venomous mammal, and the four echidna species, their spiny relatives.
There are few living monotremes in the world and all are found in australia or new guinea. Monotremes differ from other mammals because they lay eggs
