Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

Any animal’s eye color is determined by its levels of two melanin pigments: eumelanin, which makes brown-black, and ...

presumably because color vision is less important at night and because cones are most effective in bright daylight. If the benefits of seeing dwindle to none, some animals lose their eyes altogether.

While most wild animals have a very limited range of eye colors (usually black, brown, and yellow), wild cats have strikingly colorful eyes.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) ...

They have only rod photoreceptors—excellent for seeing in the deep ocean darkness but useless for seeing color. If the benefits of seeing dwindle to none, some animals lose their eyes altogether.

Seeing through one eye or many, in technicolour or black and white, few animals experience the world as we do. By analysing the properties of animals' visual systems, we can model what the world would ...

From eyes the size of a dinner plate to 360-degree vision, these animals boast extraordinarily efficient ways of seeing. Meet the creatures with the most crafty ...

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 ...