What color does a cat see in the world?

Cats can see purple, blue, green, and yellow.

Human eyes have receptors that can capture light, called photoreceptors. There are two types of photoreceptors, one is Rod Cell, which is responsible for night vision, and the other is This type of cell is called a cone cell or cone cell, which is responsible for daytime vision. The cat’s retina has many such rod cells. These cells can distinguish gray as long as there is weak light, and the cat’s retina There is a mirror-like membrane on the back called Tapetum (tapetum), which reflects the light that passes through the rod cells in the opposite direction and then enters the rod cells, so cats can see clearly under very weak light. . When you shine a flashlight on them, the bright reflection you see is this film. In addition, cats' pupils are not round, but oval, so the speed of dilation and constriction of cats' pupils will be faster than that of human round pupils, and they are also larger than round pupils, so more light will enter. So cats have very good night vision.

In addition, they also have cone cells, so cats can see colors, but they see fewer colors.

Cats can see purple, blue, green, and yellow.

They cannot see red, orange, and brown. Cats see these colors as black to gray scale. The colors cats see have low saturation, so they are not as bright and vibrant as the colors we see. The TV we watch is mainly composed of red, blue, and green screen images, but in cats, it becomes gray, blue, and green. If we add a Sepia Filter to make the color retro, it will turn red and brown into purple (purple and violet). At this time, cats can completely see TV.