1. Dogs are myopic, and their vision is less than three times the normal vision of humans. 1/2, but its night vision is three times that of humans and it is better at capturing dynamic objects. Its hearing is 16 times that of humans, and its sense of smell is 1 million times that of humans, which can make up for the lack of vision.

2. Police dog It can track odors for more than 300 hours, and a smell can be remembered for 3 hours. Throwing pungent odor substances such as pepper along the way may make the police dog find you faster, so you should choose to climb a tree and jump (fly) to another A tree...

3. Dog There are 8 blood types in dogs, but the proteins they contain are not as pure as human blood. Therefore, a dog receiving blood transfusion for the first time will not reject any blood type. However, if it wants to receive blood transfusion again, it can only accept its own blood type or the blood type of the first blood transfusion. The blood type of dogs even affects dog mating. Mixed blood types may cause sudden death of dogs after birth.

4. Dog The DNA similarity to wolves is as high as 99%. The dog that most resembles a wolf is not a husky but a Czech wolfdog (banned by many countries because it is too similar). After tens of thousands of years of domestication, dogs and humans have become closer and closer, and their nature makes them obedient to their owners. In the dog's heart, the owner is a "mother" who can be relied on and a "leader" who must be respected.