Myth: Felines and canines are colour blind
Although it was long believed that our furry companions had limited vision and only saw certain colours, it’s not the case. Cats and dogs have much better colour eyesight than we thought. (Here are 53 secrets pets won’t tell you.)
Both can see shades of blue and green. In fact, cats have way more light-sensing cells or rods in their eyes than humans do, and that’s why they can see better in low-light situations. Of course that doesn’t explain why they sometimes act that way they do. (Here are eight reasons you should never let your cat sleep in your bed.)
Admit it. You’ve crashed into a wall making your way to the bathroom during the night. That won’t happen with a cat. According to ScienceABC, they have an extra “mirror” layer at the back of their eye behind their retina, which means that the incoming light has two chances to hit the rods. In the human eye, if it misses, the light is absorbed in a black layer behind the retina, and is gone forever.
Pups have less colour-sensing cells in their eyes, so their colour vision may be only 1/7th as vibrant as ours. According to the American Kennel Club, scientists believe that a dog’s colour vision is similar to that of a person who has red–green colorblindness. (Check out Dog-Vision.com where you can pop in a photo and see what your pooch is seeing.)