Many people think that dogs are red and green blind, and most of the tones they look at are black and white, and their eyesight is also very poor. In fact, dogs have good eyesight at night. Because the dog's eyes have a large pupil, the total nu...
Many people think that dogs are red and green blind, and most of the tones they look at are black and white, and their eyesight is also very poor. In fact, dogs have good eyesight at night. Because the dog's eyes have a large pupil, the total number of light-sensitive somatic cells in the macula of the eyes is relatively large. Even in the night when the light source is weak and dark, dogs can bypass various obstacles.
Dogs have strong dynamic capture of vision, and they can clearly see the hand posture of their owners 1,600 meters away. The widest sight of the dog is 280°. Even if the owner stands behind the dog, the dog does not need to turn around and can see the owner clearly. People can only observe things at an angle of 180°, and the scope is very close, so they cannot be compared with dogs.
The dog's sense of smell is at least one million times higher than that of people. It can smell a very good smell within 500 meters, and in addition, it can also smell many scents that people cannot smell! Dogs can identify owners based on the content of olfactory information, assess similar gender, estrus situation, mother identification, distance, direction, etc. Sniff it and get to know it immediately!
Many people believe that dogs have at most intelligence at the best of seven or eight-year-olds, and their memory ability will be relatively poor. In fact, dogs have supernatural abilities in these aspects. Dogs have a strong sense of smell. Even if they can't see it with their owner for ten years, they can still remember the smell of their family members very clearly and accurately judge their own owners. When they meet again, they will warmly welcome their owners.
