Dogs are color blind Well dogs are color blind. At present, through the scientists’ experimental verification, dogs can see blue, yellow and gray. But the purple system in their eyes to identify the color blue, the red system in their eyes to identify the color of dark gray and black, blue-green identified as gray, orange, yellow, green these three colors is the dog’s visual blind spot, the dog is difficult to distinguish. Dogs can see color, and not only see black and white, dogs can see color is not as diverse as humans, so it is not total color blindness. The dog’s retina has a large number of rod cells, these cells can distinguish gray as long as there is a weak light, so researchers believe that dogs can distinguish the gray that humans can not distinguish, which is why dogs have better night vision than humans.
