Sleep is important for everyone, but some animals take it to a whole new level. While humans usually need around seven to ...

At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

A new documentary explores how slowness can be a superpower, helping animals camouflage, evade predators, maintain a low ...

At first glance, sloths look like an evolutionary mistake. They move slowly, eat almost nothing, and seem defenseless in one ...

If you are searching for a heartfelt gift for animal lovers on Valentine's Day, the Saint Louis Zoo may be the place to go.

Sloths appear defenseless, slow, and vulnerable in ecosystems filled with predators. Yet despite these disadvantages, they ...