Now the rats are getting smaller and smaller, where are the big rats gone?

Those who are used to living in the countryside must know that in the past, the rats in the countryside were very large. It's the kind of body type that people are afraid of, but with the development of society, people are now seeing rats less and less. Even if we could see some, they were very small, not as big as we had seen before.

Why is that?

For animals, they all have to choose the most suitable living environment for themselves. So before the countryside was the most suitable environment for them. There are a lot of crops in the countryside, and people living in the countryside will also hoard a lot of food, so this is also a grain warehouse for mice.

So for them, they can grow bigger and bigger, and their size will only increase. So now mice are getting smaller and smaller, also because their genes are adapting to the environment.

So now there is a concept in every family, most of them are to buy things to eat in time, so there will be no hoarding, so for mice, they have no food, so they will grow smaller and smaller. Because fewer and fewer people live in the countryside, more and more rural people are moving to the big cities to develop. There are even some rats that are about the same size as pet rats, because they don't have access to more food, and they have become smaller and smaller in the evolution of the species.

In the past, when people saw rats, they would use brooms or other things to drive them away, and they would even kill rats. So for humans, rats are really just tiny animals. On the contrary, in the eyes of the mouse, we have absolute power.

Every time they went to their homes to get food, they risked their lives. I believe that many people rarely see small mice at home now, which is also because in the big team of social development, big mice have been gradually eliminated, and only small mice can adapt to the current living environment.

It is because the environment in the home is not suitable for the survival of large rats, and the influence of competition and environment will cause the rats to become smaller and smaller, and some of the larger rats no longer exist.

They are all dead, because there is a problem with the air quality now, there is also a problem with the diet, and a lot of things have been polluted, so the rats are so small that there is no way to grow bigger.

The big rats have disappeared, because the current society is not suitable for rats to live, and when we find mice, we will take some measures.

Rats used to be big, but now I've seen small mice that I've never seen before. The baby rats are the size of peanuts, and once they enter the house, they can reproduce in large numbers and never drink water; Could this be a variant? The environment in which the fittest survive has changed the rats.

Now there are also big rats. The feed fed by the pigs in the village is eaten by the big rats, and it seems that even people are not afraid. That panache is simply no one in his eyes, let alone a thief's eyebrows, and he is arrogant and arrogant!

This type of rat is not the kind of rat that climbs high and low to attack the hole, and is exceptionally strong compared to the fat rat.

There is also a kind of rat, the garbage heap rat in the coastal area is particularly fat, even one or two pounds, and has dinner with the cat. This reminds people of cockroaches, which can be seen everywhere in the car and indoors, but they become extinct when they return to the mainland. Can anyone tell me why?

There are many reasons why rats are getting smaller and smaller, first of all, because the buildings are made of reinforced concrete, which is not suitable for rats to burrow. The second is because the living environment of large mice is not as good as that of small mice, and large mice are more likely to be exposed, and they are not as flexible as small mice. The main reason is that people have almost zero tolerance for rats, and all kinds of rat poison, sticky rat stickers and rat traps on the market make rats have no living environment in the city.

Because the genes of the mice are changing all the time, the mice are getting smaller and smaller. In the past, it was common to live in the countryside, but it is no longer common in the city.

Mainly because the oxygen on Earth is not so concentrated anymore, and the competition is getting fiercer. The big rats that used to be common are gone.

In the past, there were a lot of rats in the countryside, especially the big black rats, which were the most numerous and common to people. But in the countryside now, there is a strange phenomenon, that is, the big black rats in the past have become very rare, and most of the common ones are a very small mouse, which is small and only ten centimeters in length. Some are smaller and look like a peanut.

This kind of mouse feels like it is not an adult, but this one does not seem to be particularly large, but it has the super ability to reproduce mice. The increase in this kind of little mice makes people wonder if the mice have mutated and will be much smaller?

In fact, this little mouse really doesn't get smaller, but it's just born like this. Such a small mouse. It is also a species of rat.

It has existed before, probably because the number of large black mice in the past was very large, and this kind of particularly small mice will be neglected, but now the number of small mice has increased significantly, and there are many reasons for it.

Environmental Changes: The outdated country house buildings are very different from the current ones, with more wooden structures, gaps in the houses, and no hardening of the ground in some houses, which makes rats especially susceptible to entry and exit. It is also conducive to the rats settling down at home.

This also makes the countryside in the past, the big black rats are appropriately rampant, and the number is appropriately complex. The structure and quality of today's houses have made a qualitative leap from the past, the hardening of the ground makes it impossible for mice to make holes, and the firmness of the door makes it impossible for mice to bite through, which makes the big black mice now lose their living space, which directly leads to the current countryside. The number of large black rats has decreased significantly, and some of them are no longer visible.

Changes in habits: In the countryside in the past, every household loved to store grain, and sometimes left two houses for hoarding grain, and this habit continued for many years. The storage of food is the easiest for rats who love to steal food.

Rats are attracted by food, and the number of rats in the countryside is appropriately large. Especially in the granary, it is easy to cause rodent infestation. Nowadays, most villages do not like to store grain, and it has become a new habit to sell it directly after harvesting.

The reduction in the number of food hoards has also led to a direct decline in the number of rats.

Because the living conditions were very bad in the past, and the houses were very simple, but now the living conditions are very good, and the houses are very strong, so this situation will occur.

Because the varieties of many creatures have changed, and now animals eat more and more miscellaneous things, and their size has become larger and larger.

Because the genes of mice are not particularly good now, and many rural areas have been improved and are very clean, so mice are getting smaller and smaller.

Speaking of rats, I believe everyone is familiar with it. In the past, rats were one of the four pests in the countryside, they not only stole the food that farmers had worked hard to grow, but also chewed furniture, quilts, and even spread germs, so there was a saying that "rats cross the street, everyone shouts and fights". In the past, the size of the rats in the countryside was very large, and some of the mice were even bigger than the size of kittens, but in recent years, the huge mice have disappeared in the countryside and have been replaced by very small mice, so what caused the big mice to disappear?

Is it the rat that has gotten smaller?

In the past, because rats often came to the house to steal food, people liked to keep one or two kittens at home, and after hearing the cat's call, many mice would run away without a trace. But there is a kind of mouse that is not afraid of cats, but some kittens will be frightened to run around after seeing this kind of mouse, yes, this kind of mouse is the common big black mouse in the past. Because the size of the big black mouse is too big, some are bigger than the size of the cat, so the cat does not dare to catch the mouse after seeing the mouse that is larger than its own size, and some of the kittens that are not yet young will even run away.

Nowadays, this kind of big black mouse is becoming more and more rare in rural areas, but the small gray mouse is very common, and the small gray mouse is very small, some less than 10 centimeters, so it will run away without a trace when it hears a cat meow. So are the little gray mice that are common today the result of evolution?

In fact, the little gray mouse that we commonly see now is not the result of the evolution of mice, but this kind of mouse has existed before, because the difference between the size and the big black mouse is too much, so our focus is only on the big black mouse, but ignores the existence of the little gray mouse. So what is the reason for the big black rat to disappear?

Cause. First, the change of the environment. In the past, most of the houses were adobe houses, and many of the houses were not hardened on the ground, so rats often made holes in the houses, and the big black rats could survive in such an environment. Nowadays, the structure of the house has changed, the cement wall has replaced the original adobe wall, the house has been hardened, the rats can no longer make holes, the living environment of the big black rats has been destroyed, and the number will naturally become less and less.

Cause. Second, people's living habits have changed. In the past, rats were often seen at home because every household had the habit of stockpiling food, but now people no longer hoard food, and rats can no longer find food in human homes, so they look for other ways out.

In fact, these two reasons are summed up as natural selection and survival of the fittest, because the rural environment is no longer suitable for the survival of big black mice, so there will be fewer and fewer of them, and the smaller little gray mice are easier to hide and easier to find food, so they will always survive in the countryside. What do you think about this? Everyone is welcome to reply to the discussion.

This is due to the fact that the hygiene is now very clean, and people pay more attention to the home environment, which leads to the fact that the rats have no corresponding food to eat, which leads to the small size.

Nowadays, the conditions in the countryside have changed greatly, and most of the rural areas are now small buildings, and the doors and windows are airtight, which sometimes affects the growth of mice.

The main reason is that the environment has changed now, and in the past, the countryside would store grain, but now there are fewer people hoarding food, and rats can't steal food, so it has become smaller.

In rural areas, the basic housing facilities such as adobe houses, doors and windows are very simple. It's a piece of cake for a rat to get into the house and steal food. And it's well hidden, just drill a hole in the ground.

In this environment, rats have plenty of room to move, have enough food, and are naturally very large. But the countryside is basically small buildings made of reinforced concrete, and the doors and windows are also impeccable. It is impossible for rats to come and go freely.

Can only run roughly. All prices are **, but there is no food**, and it is difficult for farmers to farm to make money, so they go to the city to work one after another, and many farmlands are abandoned. The land is also sold to grain dealers as soon as it is harvested, and instead of hoarding grain at home, the rats live on food, and now that the grain has decreased, their food has also decreased, and they cannot eat enough, so the number naturally decreases.

The natural predator of rats is cats at home and weasels outside. Recently, the number of cats and weasels in the house has been increasing, and the natural predators of rats are increasing, and the living space of rats is getting smaller and smaller, and their numbers are getting smaller and smaller. I know that the environment has changed and still is.

I know that survival of the fittest is particularly well suited to the previous environment of large rat survival. That is, the big rats are gradually being replaced by the small mice. After the small body of the mouse has reduced food, they can also eat some food to reproduce.

There are more than 1,700 species of rats in the world, about 170 species in China and 33 species in the south, the most common being large rats and small mice. The teeth of the big rat are still very strong, he can make holes in the ground, and he can even bite trees. In the past, in rural areas, the living environment was simple, and most of them were mud houses, so rats could get food indoors or drill a simple hole to enter.

At that time, it was not me, but in the countryside began to build small buildings of reinforced concrete, with doors and windows installed firmly. At this time, the rat wants to enter through the wall, and the possibility is not very large, so he can only find another way.

There are fewer and fewer seeds for food. In recent years, the food ** is very low, many farmers have stopped farming, basically go to the city to work, overgrown with weeds in winter, such a big mouse can not find a lot of food, and will naturally go to other places to wander. The third reason is human intervention.

In the past, people had very few methods for rats, but now there are many methods and tools to eliminate mice, which overwhelm the living space of rats to a certain extent.

Because now rats have no food to steal, with the development of science and technology, in fact, houses have been built in rural areas, and rats have no holes to drill

Because most of the cities are very clean now, and everyone's home is also very clean, these rats can't find food, so naturally they don't grow big.