Since the sexual reproduction of creatures on the earth billions of years ago, all animals have struggled to find food throughout their lives, and almost spent the rest of their time looking for friends for themselves, with the goal of making them happy in their lifetime. Your own genetics are passed on more.

For example, in order to attract females, the males of most birds will flap the branches of their own flowers to make them colorful. I just want to prove to the scalpel that my genetic factors are great.

But this not only wastes energy, but also costs lives. In addition, many males among mammals beat each other and engage in cruel battles for the right to mate.

Although it is difficult to reproduce offspring, all creatures enjoy it and further develop many unique mating strategies to improve their competitiveness in the reproduction process.

For example, today we want to talk about dogs, which are the animals we are most familiar with. Those animals have the strangest mating methods among mammals. Everyone has seen how dog mating is completed.

However, it takes about 30 minutes for the male and female to close their backs after a few minutes. During this period, the two dogs have been together, basically standing still in that place. When I was a child, I felt very sad when I saw such a scene. Incredible, what is this doing?

Occasionally, I see people chasing after each other, but the two dogs run in different directions in a panic, but they cannot separate. The larger dog always drags the puppy to the ground, which is cruel. interesting.

There are also idlers holding two dogs on sticks and walking from inside. The two dogs are hanging in the air, but they still can't leave.

The back is not separated because the mating behavior has not ended yet. What cannot be separated by external force is that the lock structure between the dogs is locked together. If the separation is forced, nails and screws will be pulled out of the wall. It will break, and so will the construction of the wall.

The reason why dogs can be occluded is that the male reproductive organs rotate back more than 90 degrees to ensure the backrest. In addition, there are two expandable balls at the end of the genitals. If the balls expand, they will be sandwiched in the middle. This and Same as expansion bolts.

Therefore, it is difficult to separate two dogs based on external force, but it is not absolutely impossible to separate them. If they are forcibly separated before mating is completed, it will cause great physical and psychological harm to the dogs.

This has only one purpose, which is to improve the success rate of one’s own offspring. During a long period of time in a closed environment, male dogs will be like hanging bottles.In this way, the female reproductive cells can be fully combined with each other due to the genetic material over a long period of time.

In addition, in the closed state, the male dog always occupies the pit, and other male dogs can also avoid courtship. This breeding method maximizes the success rate of a single breeding and is a very good breeding strategy.

This strategy has the biggest disadvantage. It is said to be unsafe. As mentioned above, the resistance of the two dogs will be weakened when they are closed. If they encounter natural enemies at this time, they will definitely not be able to escape.

Dog children evolved from wolves about 10,000 years ago. Over the years, dog children have undergone great changes in appearance, but even so they can mate with wolves without reproductive separation. , the dog also inherited the breeding method of its ancestor, the gray wolf.

Wolves are social animals. It can be said that the fighting power of the group has no absolute natural enemies in nature. More importantly, their living environment is relatively safe. Therefore, wolves reproduce in this way in groups in the wild. .

Provides excellent conditions for the occurrence and spread of such sealing behavior among gray wolf species.

However, we should know that for a safe environment, only organisms that are not threatening must evolve such a structure. The genetic mutations of evolution are random and have no specific direction.

In the wolf pack, the previous mating method was also very simple. However, until one day, the genetic gene of an individual in the wolf group suddenly mutated, and this closed structure gradually formed. , other wolves adopted the original mating method.

Wolves with obvious occlusion structures have an advantage among their genetic descendants. According to the theory of evolution, genetic mutations that are beneficial to organisms gradually spread to the entire race during sexual reproduction, so the males in the wolf pack also gradually have Before this structure, males who used primitive mating methods were naturally eliminated.

The living environment is devoid of any threats, and this environment lays the environmental foundation for the emergence of closed structures.

The next random genetic mutation happened to produce such a closed structure, which promoted personal competitiveness, so it was gradually retained.

The reason why lions and humans do not have such a structure is also very simple. The ancestors of lions and humans lived in the African grasslands, which is the most fiercely competitive and cruel place on earth.

Is this why feline lions abandon their aloofness and live in groups? Only in this way can weBetter life on the African savannah.

Human beings’ ancestors lived on the African grasslands for millions of years after diverging from chimpanzees.

Lions, giraffes, chimpanzees and all animals on the grasslands have been proven to be “electric shock” "People", no matter which one is the fastest way to reproduce offspring.

Some people may shed ink, but they will all die in the end.

Humans may not feel safe right now, will we become safe hitters like dogs?

It is true that people have become safer, because it is unprecedentedly safe, so many men will show off their time.

We want to fly, but we may not be able to grow wings, and we may not evolve to this aspect as time goes by. Moreover, humans have been safe for tens of thousands of years, and we are risking millions of years. , so in a short period of time, there will be no change in the current situation of human "Electric Man".