Their eyes are adapted for nocturnal vision ... making the Horned Viper a formidable predator. Madagascar Day Geckos are ...

Watch a pond light up with glowing alligator eyes. There's so many of them, and they're bellowing ferociously.

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 bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than ...

Geckos, on the other hand, have excellent colour vision at night - a useful advantage for a nocturnal hunter ... of water to startle a potential predator or by closing their shell. Excellent vision ...