Fossil teeth show extinct giant kangaroos spent their lives close to home – and perished when the climate changed.

A mountain lion slinks through California’s golden hills right into our neighborhoods. As development creeps into wild lands, ...

So many extinction-level events happened in ancient times, it is a wonder anything survived. These the ones that killed the ...

“Scientists once believed that only animals who were vocal learners — like humans and parrots — could learn to find a beat,” ...

Be glad you weren't around when these Jurassic speed demons lurked the Earth. They were faster, and deadlier, than anything alive today.

Imagine a world where no wild lions or tigers roam the savannas or jungles. What would happen to ecosystems, prey populations, and biodiversity if these iconic predators went extinct in the wild? This ...

This week, a string of archaeological studies lend insight into Roman gladiators, an ancient crocodile-like beast, and a ...

Scientists believe that a cave east of Athens was a hideout for lions which roamed the ancient Greek countryside thousands of ...

"The dire wolf is no longer extinct," it trumpets on its website ... are thought to have had dark fur and to have been the ...

As human beings have grown wealthier, they have come to care about environmental stewardship and gained the resources to act on their newfound compassion for wildlife.