Species are disappearing at a rate of roughly four every decade, driven by feral predators, habitat destruction, and a changing climate. Feral cats alone kill an estimated three billion native animals ...

“Its distinctive skull suggests it used fast and powerful bites to catch small and agile prey...,” said Love Dalén, professor ...

A remarkably preserved mastodon tooth believed to be more than 10,000 years old was discovered in a California creek.

The "Carnival of the Nearly Extinct Animals," a live music and dance show raising awareness for endangered species, comes to ...

Ancient DNA from fossils found in Wyoming and Canada's Yukon Territory suggests the wild cat more closely resembled modern ...

These animals were declared extinct—until they weren't. Meet the incredible creatures that defied science and reappeared when ...

In a new study released Friday, scientists say DNA extracted from the bones of a prehistoric "American cheetah" found in ...

One animal holds a world record so bizarre it required the invention of modern cloning just to make it possible. The Pyrenean ibex died out, came back to life, and then vanished again within minutes.

With their slender bodies and long front legs, Miracinonyx trumani—often nicknamed the "American cheetah"—was long thought to be a North American analog of the African big cat. But in a new study ...

About 252 million years ago, at the end of the Permian Period, a large proportion of species on Earth rapidly became extinct.

Elk bugling season turns a northern Michigan forest into an amphitheater where the sound carries for miles across untouched ...

Museum bones holding tiny scraps of DNA were enough to rebuild two missing branches of the Galápagos tortoise family tree.