Harbin, Heilongjiang, Zhao Nvshi was hospitalized for asthma attack. Before the allergen was detected, there was no allergic reaction to dog hair and dog epithelial cells. In desperation, I gave my puppy, which I had raised for nearly 8 years, to my good friend for adoption. After returning home, Zhao Nvshi saw the tearful puppy at the gate for an instant. Ms. Zhao said that the relatives' home is 8 kilometers away from her home, and the puppy probably ran for nearly two hours. There were many tears in the dog's eyes at that time. I feel very aura. I didn't expect it to be so good to myself. At this stage, I'm going to build another small kennel in the yard.

In daily life, you can often see the figure of a puppy. German shepherds help shepherds look after their sheep on the vast grassland, rescue dogs help the injured in the cold, watchdog 1 watches the door at home, pet dogs take care of the elderly and children, and working dogs serve the leaders faithfully. Some dogs even treat mental illness and arouse patients' good memories of daily life. According to film and television dramas or actual cases, it is easy for everyone to find many touching personal stories.

The dexterous taste of dogs is reflected in two aspects: one is the vulnerability to smell; The second is the ability to distinguish smells. Sensitivity varies according to the type of smell. The dog's ability to detect odors is1000,000 times or even1000,000 times that of humans, and its ability to distinguish odors is several times that of humans, and it can distinguish about 20 million different odors. Excellent police dogs with professional training can recognize more than1100,000 different smells.

The perception ability of the dog's auditory system can reach1.2000 Hz, which is 6 times that of human beings, and the farthest distance that can be heard is about 400 times that of human beings. Dogs are also twice as able to distinguish the direction of noise as humans, and can distinguish 32 directions.

The lens of a dog's eye is twice as thick as that of a human, but its accommodation ability is only one-fifth to one-third of that of a human. You can identify it within 50 meters, but you can't see it clearly beyond this distance, but the purpose of fitness exercise is to see the distance of 825 meters, and the line of sight is very wide.

As the saying goes, "A son doesn't think his mother is ugly or his family is poor". Puppies have been the most loyal friends of human beings since they were trained. When humans were still gathering and hunting for a living, dogs hunted with humans, humans went to the gathering place, and dogs guarded the door for humans. Although the dog's appearance has changed greatly with the changes of society, its nature of being friends with human factors, companionship with people and solving problems for leaders still exists. As the saying goes, "He is your dog, but you are his life".