The shape of a cat's pupil has to do with their lifestyle habits, with nocturnal cats having more slit shaped pupils to help ...

Do you have blue eyes? We talked to experts to discover curious facts about baby blues, including whether your biological family is bigger than you ever imagined.

In a river of northeastern Brazil, an “armored” creature with “large” eyes paused to rest against a rock. The maze-like pattern that helped camouflage it in the wild also made it a popular aquarium ...