what colors do dogs see best

Dogs see colors best in the blue and yellow spectrum. Their color vision is dichromatic, meaning they have only two types of color receptors (cones) in their eyes, unlike humans who have three. This causes dogs to see the world primarily in shades of blue and yellow, while colors like red and green appear as muted browns, grays, or dull shades to them. Because of this, blue and yellow colors stand out more vividly for dogs, and items in these colors are easier for them to see and more attractive to their vision.