Dogs can see blues and yellows, but not reds and greens. They possess only two types of cones and can only discern blue and yellow, which is called dichromatic vision
. This limited color perception means that the world may appear as various shades of gray, and colors like red, orange, and green may be perceived differently. For example, red may appear as a dark brownish gray to a dog
. Therefore, while dogs can't see the same spectrum of colors as humans, they do perceive the world in a colorful way, just with a more limited range of hues.
