visual
Many people who know a little bit about dogs think that dogs have poor vision, can’t distinguish colors, and are even colorblind. This view is not accurate enough. In fact, dogs can distinguish colors. From the perspective of humans, the color world of dogs is very strange; dogs can adjust their eyes worse than humans, but they have a wide field of vision and can see farther than humans. , In addition, the head is very flexible, and it can basically perceive wherever the vision range goes.
hearing
In fact, dogs have already identified their owners auditorily when they are very young, and recorded the owner’s voice information in their brains and left a deep impression. From the timbre and pitch of the speaking voice, they can clearly identify the owner. And strangers; this auditory memory is long-lasting, remembering this information for decades or a lifetime, and instantly distinguishing when the owner’s voice is heard at a distance or near.
smell
The olfactory cells of dogs are very developed. There are more than 200 million olfactory cells, which are generally about 40 times that of humans. They can accurately identify some chemicals, avoid harmful gases in the air, and search for lost items. When dogs eat, they often sniff first to see if they can eat. There is also a very important function, which is to identify the direction, and the dog can find the way home through the urine left behind. Dogs can not only distinguish their owners from their sense of smell, but also identify directions, find prey, and find food.
touch
There are many nerve endings distributed on the bottom of the dog’s feet, which can well perceive the temperature change of the outside world and external information; when someone walks, the frequency and number of walking will be recorded, so as to remember this person. Dog fur is also very sensitive, and the way the owner touches the skin will also be recorded by the dog when touching the skin. Therefore, touch is also one of the ways to identify the owner.
