Are dog eyes really that “blind”? What kind of landscape does the world look like in their eyes?
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Dogs are indeed short-sighted
A dog shoveling officer must have encountered this situation, that is, you are far away from your dog place, the dog will stay in place. If you call him, he will run to you wagging his tail.
That’s because the dog is short-sighted, and he sees blurry visions that are too far away. But the dog’s hearing is very sensitive, you call him, the dog can tell it is you according to your voice!
Scientific studies have shown that dogs have the average vision of all animals, and they cannot see objects that are closer to them.
At the same time, due to the large lens of the dog’s eyeball, he cannot adjust the sense of distance, and he can’t see far objects clearly. He can clearly see objects twenty or thirty centimeters away from him.
If you don’t believe me, you can pay attention. If you accidentally drop the treats to the dog, the dog will only reach the place where the treats fell, and then rely on his sensitive dog’s nose to smell around, and finally find it. That snack.
The dog is still colorblind
The dog’s eyes are undoubtedly different from ours, and the effect of natural dog observation is the same as our observation Effects also vary widely.
Color vision may be due to signals sent to the brain after a special type of photoreceptor cell is stimulated in the retina. Researchers have found that humans have three types of cone cells, while dogs have only two.
So dogs can’t distinguish colors like us. They can only distinguish colors such as yellow, blue, indigo and violet in different shades, but cannot distinguish high chroma such as red and green in the visible spectrum color.
The left is the parrot in the human eye, the right is in the dog’s eye The parrot
As an analogy, when a dog sees red, he will think it is a dark color, and when he sees green grass, he will think it is a white grass.
So dogs can’t tell the difference between traffic lights and green lights. Although they can’t tell the difference between traffic lights, their hearing is very keen, and trained dogs can distinguish the sound of traffic lights when they change.
There is an old saying that if God closes a door for you, it will open a window for you. Although dogs are colorblind, their vision at night is surprisingly good.
This is because the dog’s retina has fewer cone cells, but more rod cells. Cone cells deal with light and shade and color vision, while rod cells deal with low-light vision. The abundant rod-shaped cells allow dogs to see clearly in low light.
The night tree in the human eye on the left, the night tree in the dog’s eye on the right
So dogs have good vision at night.
