Dogs CAN see in colour! The same ones that humans see, but they can't distinguish between green, yellow and orange, thus they have partial color-blindness.The number of cones in their eyes is low as they are nocturnal (or were as wolves).Another Answer:Dogs are said to have dichromatic vision -- they can see only part of the range of colors in the visual spectrum of light wavelengths. Humans have trichomatic vision, meaning that they can see the whole spectrum. Dogs probably lack the ability to see the range of colors from green to red. This means that they see in shades of yellow and blue primarily, if the theory is correct. Since it is impossible to ask them, it is not possible to say that they see these colors in the same hues that a human would. Whether or not the ability to see some c