Color vision is the ability to see and distinguish between different colors. Humans have three types of color receptors in our eyes, called cones.
Dogs have only two types of color receptors in their eyes, called cones. These cones are sensitive to blue and yellow light.
Dogs can see blue, yellow, and some shades of gray. They cannot see red, green, or purple.
Human color vision is much more complex than dog color vision. We can see a wider range of colors, and we can distinguish between more subtle shades of color.
Some studies have shown that dogs can be trained to discriminate between different colors, but other studies have shown that this is not the case.
One way is to use a color vision test card. These cards have different colored shapes on them, and you can see if your dog can identify the different colors.
Some dogs can be trained to see colors. This is done by exposing them to different colors and rewarding them when they can identify the correct color.