Do dogs have colour vision?

Yes. However, their colour vision differs from human beings, since dogs are said to have dichromatic vision, which means they can see only part of the range of colours in the visual spectrum of light wavelengths. Humans have trichromatic vision, meaning they can see the whole spectrum. Dogs probably lack the ability to see the range of colours from green to red. This means that they primarily see in shades of yellow and blue.