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.

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

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 ...

The fish – which belongs to the family Branchiostegidae, commonly known as deepwater tilefish – has two vertical stripes ...