Like platypuses, echidnas are monotremes, which means they're mammals that lay eggs. Echidnas lay one egg at a time, and those eggs take 10 to 14 days to hatch. Baby echidnas are called puggles.

Mammals in the news, wild mammals, mammal conservation efforts, and domesticated mammals.

Letter Published: 01 July 1965 Eocene–Oligocene Boundary in New Zealand M. S. SRINIVASAN Nature 207, 514–515 (1965) Cite this article ...

Studying the physiology and ecology of whales, dolphins, and other marine mammals through methods ranging from molecular ecology to tracking the movements of individuals and populations using ...