Nocturnal animals tend to have proportionally ... is that they must be adequately protected during the day. Some animals accomplish this with a retractable eye flap. Others rely on their pupils.

Like this fennec fox, nocturnal behavior makes sense for animals living in blistering desert heat—cooler night temperatures stop them from overheating when exerting themselves. Photograph by ...

From eyes the size of a dinner plate to 360-degree vision, these animals ... per compound eye, a greater number than any other living creature. And with eyes covering almost their entire head, they ...

Many of the animals that eat red-eyed tree frogs are nocturnal hunters that use keen eyesight to find prey. The shocking colors of this frog may over-stimulate a predator's eyes, creating a ...

Nocturnal animals tend to have proportionally ... is that they must be adequately protected during the day. Some animals accomplish this with a retractable eye flap. Others rely on their pupils.