The creation of three "dire wolf" pups has raised hopes that it may be possible to resurrect extinct animals. But some ...

Volcanic eruption from 12 million years ago preserves a snapshot of extinct animal life. Rhinos that once roamed much of ...

Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.

Also known as the Sumatran tiger, this subspecies is critically endangered with only a few hundred individuals remaining in Sumatra. This is the smallest and most endangered of the five remaining ...

Endemic species are found only in specific regions, often isolated islands or ecosystems. Here are 9 Endemic species that are ...

The challenge with de-extinction efforts is that they pull the spotlight away from the gravest crises on the planet.