what colours do dogs see

Dogs see colors differently from humans because their eyes have only two types of color-detecting cones, which gives them dichromatic vision. They primarily see colors in shades of blue and yellow, while colors like red and green are not distinguished well and may appear as shades of gray or brown to them. This color perception is similar to a form of red-green color blindness in humans. They also see in shades of black, white, and gray but with less brightness and clarity than humans do. Overall, the dog’s color vision is more limited and dimmer compared to human trichromatic color vision.