Some were the size of a dog. Others were as large as polar bears. A newly-discovered fossil of the ferocious hyaenodont is ...

Once abundant throughout southeastern Australia, the critically endangered plains-wanderer is now on the brink of extinction ...

The bone and joint structures in mammal tails help them keep their balance. Could those benefits be adapted for robots?

While sexual reproduction is the predominant strategy among animals, some species have evolved the ability to reproduce asexually ...

A study on bird intelligence found that emus and rheas can solve puzzles to access food, proving they can innovate.