People who have had dogs know that dogs are very close to people. Research shows that dogs can even understand human intentions better than chimpanzees. Moreover, dogs are also the most loyal of all domesticated animals - police dogs, military dogs, guide dogs, guard dogs, companion dogs and appreciation dogs. Their magical talents and selfless love for human beings are still powerful assistants that human beings can't replace even today with the development of science and technology. These are the results of human long-term domestication.
You may not know yet? Although people have domesticated many animals such as pigs, cattle, horses and chickens, the first domesticated wild animal is the wolf. When the wolf meets the dog, he has a dog. The wolf is the ancestor of the dog! However, whether the dog originated from one kind of wolf or a variety of wolves, whether it was domesticated in one area and spread to all parts of the world, or whether it was domesticated successfully in different places, even Darwin, the founder of evolution, said he couldn't see through it.
In recent years, with the development of molecular biology, things began to turn for the better. After analyzing the mitochondrial DNA of dogs, wolves and jackals, scientists found that dogs and gray wolves are closely related, indicating that dogs are most likely domesticated by gray wolves! As for the place of origin, it has always been debated. In 2002, science, the world's top academic magazine, reported that after comparing the DNA of dogs around the world, Chinese and Swedish scientists said that dogs in East Asia have the richest genetic diversity, and dogs have the closest genetic relationship with Chinese gray wolves. Therefore, modern dogs are likely to have originated in China about 16000 years ago.
This view immediately ignited the powder keg of the debate, and other scientists began to cite all kinds of refuting evidence. In 2010, the famous online edition of nature published another genetic analysis, which believed that dogs had the closest relationship with gray wolves in the Middle East, and locked the origin of dogs in the Middle East between 13000 and 12000 years ago. However, the study also acknowledges that a few Oriental dogs have a genetic relationship with Chinese gray wolves. The dispute over the origin of dogs seems to continue for some time.
No matter how controversial, it is an indisputable fact that dogs have been with humans for more than 10000 years. In these long years, more than 100 million dogs have served human beings, which has established deep feelings between the two sides. Although dogs occasionally infect some people and dog diseases, which will bring some harm to people, their shortcomings do not hide their shortcomings. They have indisputably become the closest animal friends of mankind.