In the mountains of southeastern China, an unusual reptile with “blood-red” eyes maneuvered through the landscape. Maybe it was searching for a meal or a mate. But the 1-foot-long creature ...

One of the rarest cat breeds, the Khao Manee is a truly striking feline. With their jewel-toned eyes, often different colors, ...

Close up of snow leopard at zoo. (Image credit: Ellen van Bodegom via Getty Images) Tabin and his co-author documented the eye colors of more than 40 cat species by looking at cat images online.

Life T. rex’s unusual eye sockets helped it evolve a powerful bite. Some large, meat-eating dinosaurs such as Tyrannosaurus rex had keyhole-shaped eye sockets, and reconstructions suggest this ...