The colors that dogs can see are black, white, blue and gray. Red is dark for dogs, so they cannot see red. Green is white for them. So they are actually red and green blind. Photoreceptor cells of the retina mainly include cones and rod cells. Cone...
The colors that dogs can see are black, white, blue and gray.
Red is dark for dogs, so they cannot see red. Green is white for them. So they are actually red and green blind. Photoreceptor cells of the retina mainly include cones and rod cells. Cone cells work in bright light, mainly used for daytime vision and important functions of identifying colors. Different cones can sense different colors of light.
Dog type cones are smaller than humans on the retina and can only tell some of the colors in the wavelength range, such as blue, yellow, gray, etc., but you can feel the light and dark changes in each color, such as light blue, light blue, light yellow, etc.
The dog also has no red and green cones, so it is like the red and green blind man of the blue star. Dogs have larger pupils and a wider field of view, have higher rod-shaped cells on the retina, and have stronger photosensitive ability (rod cells can sense low light), so night vision is much better than humans, and the eyes can adapt to exercise more. Maybe something we can't see at night is easy for dogs to see.
Dogs can tell colors better than us. Maybe we look like many yellows, but there are ten different yellows in the eyes of dogs.
