Since cats’ cones have two opsins, which makes them what’s called dichromatic, meaning they best perceive two light colors. Humans have a third type of opsin, making our eyes trichromatic.

Sight Like humans, cats use their vision to see the world around them—and to hunt down their next snack. But differences between human and cat eyes mean that we see the world quite differently.

Humans do not have a tapetum lucidum but cats, including lynxes and pumas, do. The Open University, CC BY-SA Most dogs’ eyes will glow in dark spaces when a light shines on them. Tommy Greco, CC ...