What color is the world in a dog’s eyes?

The world is in color through a dog’s eyes.

In human vision, we perceive "tricolor", which means that we can see three colors through the cone: blue, green and red, which are the three primary colors. Through the interaction of the three primary colors, we can see a variety of different colors, about 100,000 of them. In dogs' vision, what they perceive is "two colors". Dogs can only see blue and yellow, and through the interaction (color mixing) of these two colors, they can see 10,000 colors. .

When we understand the world of colors that dogs can see, we will find that some agility training equipment usually uses blue or yellow color schemes so that dogs can clearly see Training equipment and the very important "buttons" (yellow parts) they must touch.

So we can now know that in the dog’s color system, it cannot see red at all, so when we choose toys to buy for dogs, we need to consider whether to buy blue ones It’s still yellow, especially when we plan to take these toys outdoors for dogs to play with, we need to know that green and blue look exactly the same to dogs.

Dogs have a very wide field of view. Their field of view is about 250 degrees, while humans’ field of view is only 190 degrees.

Of course, because dogs have large pupils and a tapetum layer, their eyes also have very good night vision. The large pupils can serve as mirrors to reflect light, giving the eyes more opportunities to absorb photons. , thereby seeing more in the dark.