Sir David Attenborough, animal enthusiast and narrator of countless wildlife documentaries, turned 99 on May 9. At such an ...

Also known as "volcano snails," these gastropods grow a suit of metal-enriched scaly armor and have an enormous heart, which ...

From deep-sea sponges to ancient tortoises, the longest-living animals can survive for centuries, even pausing aging.

The discovery suggests that after the first animals emerged from the ocean around 400 million years ago, they evolved the ability to live exclusively on land much faster than previously assumed.