Echidna, Platypus
Monotremes are mammals that lay eggs. There are only three species of monotreme in the world - the platypus and two species of echidna, one of which is restricted to the New Guinea highlands.
Monotremes are mammals that lay eggs. There are only three species of monotreme in the world - the platypus and two species of echidna, one of which is restricted to the New Guinea highlands.
