Zookeepers thought that "Mr. Shuffles" had died during labor, but the calf pulled through.

Birds that appear to be half-hen, half-rooster aren't quite as mixed up on the cellular level.

New evidence suggests that our human ancestors 2 million years ago were eaten by a large crocodile that lurked at the water's edge before closing its jaws on victims and drawing them under to their death. (Early hominids, possibly belonging ...

The voracious appetite for turtle eggs could wipe out these marine creatures.

Suicide is not just a human behavior -- and it can help us understand human suicide.