From dogs and birds that can understand words to puzzle-solving octopi, read about the world's most clever animals.

The “golden horseshoe,” an otherworldly image of a rare golden tri-spine horseshoe crab accompanied by a trio of golden trevallies fish, has been chosen as the winner of the Wildlife Photographer of ...

Imagine losing a limb and growing it back like nothing ever happened. Sounds like science fiction? Not for many animals in the natural world! While humans are capable of healing cuts and fractures, ...