The belly button, or navel, is a scar that forms after the umbilical cord is detached shortly after birth. The umbilical cord ...

But there’s a small and rare group of mammals that do things differently– they lay eggs! These special creatures are called monotremes, and they are some of the most unique animals in the world.

Three experts consider what’s required to protect and conserve Australia’s natural wonders, from fighting invaders to ...

The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

By now the three groups of mammals that we know today (monotremes, marsupials, and placentals) had evolved. Meanwhile, there were also plenty of insects including some that we would recognize ...

Nick] Uniclade. - Uniclade is incorrect. It's monotreme. Monotreme. And Mad for Mammals for 30 to wrap up the category. Found in Lake Baikal in Russia, the nerpa is a rare earless freshwater ...

While many have nipples that allow their young to nurse, one family of mammals, known as monotremes, secrete milk through ducts rather than nipples. In nearly all mammals, the female is the only one ...

Hamilton, M. J.,Davidson, A. D.,Sibly, R. M.,Brown, J. H. Over many millions of years of independent evolution, placental, marsupial and monotreme mammals have ...

Short-beaked Echidna - Tachyglossus aculeatus in the Australian bush, known as spiny anteaters, family Tachyglossidae in the monotreme order of egg-laying mammals, pokes and feeds on ants and walks.