The finding could shed light on how animals with backbones first invaded land, researchers say.
The family tree of horses just took an unexpected turn, as researchers have found horses are related to the strangest animals ever discovered.
Pigeons are everywhere! And in astonishingly diverse forms. While it's an easy line to call them "rats with wings" and just dismiss them, Trace finds there's actually much to love about pigeons, starting with their crazy-cool flying skills.
A competition inspired by the NCAA basketball tournament lets you pit one mammal over another.
Forget ridiculous superstitions about black cats -- dark-colored animals carry survival perks in their coloring.
An ancient relative of the hippopotamus likely swam from Asia to Africa some 35 million years ago.
An ancestral study of the hippo reveals that a wide variety of animals share distant relations with the mammal.
Luna moths have just a week to live, their only goal to find a mate and make more luna moths. Their only problem? How to dodge bats that want to eat them. It turns out that's what their super-long tails are for -- pulling a "made you miss!" on bats.
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