Quick Take Platypuses are monotremes, one of the oldest branches of mammals, and they reproduce by laying eggs instead of giving birth to live young. Unlike most mammals, platypuses secrete milk ...

Outliers among mammals, monotremes lay eggs instead of giving birth to live young. Only two types of monotremes, the platypus and echidna, still exist, but more monotreme species were around about 100 ...

Australia is home to some truly unique and unexpected creatures, but few are quite as strange and fascinating as the platypus (Ornithorhynchus anatinus). The platypus doesn’t fit into any particular ...