Dogs can see colors, but not in the same way that humans do. They have fewer types of cones in their eyes, which means they can see fewer colors.
Humans have three types of cones in their eyes: red, green, and blue. Dogs only have two types of cones: blue and yellow.
Dogs can see blues, yellows, and some shades of green. They cannot see reds, oranges, purples, or browns.
Dog vision is also less detailed than human vision. They have a wider field of view, but they cannot see things as clearly as humans can.
Dog vision evolved to help them hunt and survive in the wild. They need to be able to see movement and contrast, which is why they can see blues and yellows so well.
There are a few ways to test your dog's color vision. One way is to use a special toy that changes colors. Another way is to use a food dye to color their food.
While dogs cannot see all of the colors that humans can, they still have a good sense of sight. Their vision helps them to navigate their environment and to interact with the world around them.