Forrest Galante examines historical footage of animals considered extinct or feared extinct, including the thylacine, baiji ...

A venomous primate - once feared extinct - is alive an well, a new study states.The Bangka slow loris, a small primate once ...

Some of the largest animals ever to exist have lived beneath the ocean’s surface. From the enormous megalodon, a prehistoric shark that grew far larger than today’s great whites, to the blue whale, ...

Hunters wiped out thylacines, commonly known as Tasmanian tigers, in Australia nearly a century ago. But a myth about these shy, semi-nocturnal predators may have been behind the species’ extinction.

Sometimes an animal disappears so completely that scientists eventually stop expecting to see it again. Decades pass, expeditions come up empty, and the species quietly moves into the extinction ...