The presence of the tapetum can be observed at night when a pair of glowing eyes reflects back a flashlight or some other light source. (Interestingly, different animals have different color ...

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 ...

Red-footed boobies use these attributes to plunge-dive and capture fish that they spot from above with their sharp eyes. At night, they may dive for schooling squid that are visible because of ...