Did dogs domesticate humans? They used humans to complete their evolution

In our common sayings, large dogs, especially "Chinese pastoral dogs", are accustomed to calling them "wolf dogs". Wolves evolved. Basically, when we check the proposition of canine evolution, there are countless documents that will tell us that all dogs and canids in the world are now sub-groups evolved from the population of "grey wolves". kind. It's just that with the continuous progress of human DNA research, more and more evidence is showing that maybe dogs and wolves are not from the same ancestor, which means that the name "wolf dog" is not because dogs are the evolution of wolves. Descendants, but from the beginning, dogs are dogs, and wolves are wolves. The two are just more similar.

According to the British geneticist's research on canine DNA, no matter what breed of dog it is, they all point to the same ancestor on the DNA chart, but taking this DNA to compare the wolf's DNA, you will find that the two are the same. There are actually not many similar DNAs between them, although many large dogs and wolves are not very different in appearance, such as huskies and Alaskan dogs.

In addition, biologists from Russia also found that when studying an ancient dog fossil more than 10,000 years ago, there have been considerable differences in the bloodlines of ancient dogs and modern dogs. Combined with the findings of other genetics, biology, and DNA researchers around the world, a growing body of evidence points to two possibilities—one possibility is that wolves and dogs may not have been the same species at the beginning of their lives, And it has been a diverse population from the beginning; the second possibility is that ancient dogs gradually lost the wolf DNA that they should have in their bodies during the long evolution.

This kind of speculation is not without realistic basis. From the current global canine living habits and breeding habits, dogs are the closest creatures to humans, and many of their habits are already very different from wolves and other wild animals, such as wild animals. Animals basically have a fixed spring estrus period, which is created by the natural crisis-ridden living environment, but dogs do not have this characteristic, but they can estrus whenever they want throughout the year; There is a feature of "reproductive atresia", but this feature will cause dogs to have no way to resist foreign enemies or escape when mating, which is obviously contrary to nature's natural selection.

Why do dogs have such abnormal physiological characteristics? It is generally accepted in the world that humans have created a relatively safe living environment for them, and they no longer need to worry about survival every day like their ancestors or other wild animals. The current physiological characteristics, that is to say, it is not so much that humans have tamed dogs, it is better that dogs have used humans to complete the physiological evolution and evolution of their own species. Did dogs domesticate humans? They used humans to complete their evolution.

This statement is also well-documented. According to the research of canine fossils and DNA by scientists around the world, they found that the DNA of some dogs on the African continent now has a great overlap with the DNA of some ancient dogs in the ancient Middle East. It is unlikely that such a large-scale species migration simply depends on the free movement of animals. To a large extent, it may be that the original dogs chose to travel together with humans to travel across the oceans and waters.

From the "loyalty" habits of modern dogs, it can be seen that the dependence of canine creatures on humans - in fact, the interaction between humans and dogs in ancient times was more like an equivalent exchange: dogs provide housekeeping for humans. Humans provide a living environment that can shelter from wind and rain, have abundant food, and have no other natural enemies, so some people say that they are human beings tamed by dogs. Therefore, in the evolution of ancient dogs, the habit of migrating with humans gradually evolved, and the habit of spring estrus should be gradually abandoned because there is no worry of "life or death" in the living environment.

Are humans the one who was domesticated? Dogs use humans to complete their evolution. In fact, in a sense, not only dogs have used humans to complete the evolution of their own species, but also cats. Although small cats are not as important to humans as dogs, and have never even been domesticated, cats are also the second closest species to humans after dogs, and have also used humans in the evolution of their lives. Evolution is complete.

From a biological point of view, cats can be regarded as top predators. Whether it is a large cat like a tiger, a lion hunting cat, or a small cat such as a dune cat and a lynx, it is more difficult for humans to catch them than dogs. The species is larger, so there has never been a saying that "cats are domesticated". Why modern pet cats are called "cat masters" is also closely related to their interaction with humans.

In ancient times, since humans began to master planting technology, civilization began to develop rapidly, but rodents such as mice have greatly damaged human food, and it happens that rodents are the favorite food of small cats. Therefore, the characteristics of the feral cat group were discovered when humans struggled with rodents for a long time. The use of tools by human beings is not only reflected in the level of physical tools, but the use of biological tools has also been used by humans since ancient times. Therefore, after humans discovered that small wild cats would not pose a threat to human survival and could help humans eliminate rodents, ancient times Humans have begun to use food inducement and other means to tempt wild cats who do not live in permanent residences to stay in human settlements. Over time, wild cats have gradually evolved into domestic cats, and cats will follow wherever humans go.

It's just that small cats don't have as much effect on humans as canines. Therefore, cats do not receive the same treatment as canines in terms of care, and therefore have not evolved the feature of "loyalty", but who gives them the same treatment. Whoever they eat they follow.

This way of using humans to complete evolution is not the same as domesticated wild animals such as poultry and pigs, because chickens, ducks, pigs and cattle are regarded by humans as "food sources" rather than "life tools". In the evolution of life, cats and dogs are more like being in a "symbiotic" state with humans, and it is precisely because of this that modern cats and dogs have evolved living and breeding habits that are almost completely different from other wild animals.

The idea of ​​using humans to complete the evolution of the population is really novel enough. What do you think about it?