What are the hibernating animals?

1. There are many animals with hibernation habits, but they are mainly distributed in temperate and cold zones. The animals listed below also refer to those living in temperate and cold zones.

(1) Reptiles, such as snakes, lizards and turtles.

(2) Amphibians, such as frogs.

(3) fish.

(4) Molluscs, such as snails and shellfish.

(5) And quite a few perennial insects also have hibernation habits.

(6) Some small mammals also have hibernation habits, such as rats, bats, badgers, minks, stingers and so on.

(7) Among large mammals, only bears have the habit of hibernating, such as black bears, brown bears, Ma Xiong, Arctic white bears, etc.

2. Among animals, amphibians mostly need to hibernate, similar to snakes, lizards and turtles. In winter, they will find their own nest and climb in to hibernate.

Animal hibernation is a wonderful phenomenon. In Canada and some mountain rats, they hibernate for half a year. When winter comes, they dig tunnels, get into caves and curl up. Their breathing gradually slows down to almost stop, their pulse correspondingly becomes extremely weak, and their body temperature drops more linearly. At this time, even if you kick it, there will be no reaction, just like death, but it is actually alive.

Squirrels sleep more dead. Someone once dug a hibernating squirrel out of a tree hole, and its head seemed to be broken. No matter how you shake it, you won't open your eyes, let alone walk. Put it on the table, even the needle can't wake up. Only by heating it with a stove can it move leisurely and for a long time.

Hedgehogs almost stop breathing when they hibernate. It turns out that its larynx has a piece of cartilage, which can separate the mouth from the throat and cover the population in the trachea. Biologists once picked up the hibernating hedgehog and soaked it in warm water for half an hour before seeing it wake up.

Animal hibernation is really unique: snails seal their shells with their own mucus. When winter comes, most insects are not "salty insects".

Or larvae, but hibernate in the form of pupae or eggs. Bears breathe normally during hibernation and sometimes walk outside for a few days and then come back.

When the female bear hibernates, snow will cover her body. Once he wakes up, there will be 1-2 innocent and lively bears lying beside him. Obviously, they were born during hibernation.

Animals hibernate for different lengths of time. Marmots in Northeast Siberia and hedgehogs in China can sleep for more than 200 days at a time, while sable in the former Soviet Union only hibernates for 20 days a year.

Animal hibernation is completely a protective action against the unfavorable environment. The main factors leading to animal hibernation are the decrease of environmental temperature and the lack of food. Scientists have proved through experiments that animal hibernation will lead to the decline of thyroid and adrenal function. At the same time, the gonads develop normally.

After hibernation, animals' antibacterial and disease-resistant abilities have been enhanced. Obviously, hibernation is beneficial to them, which makes them more agile and have a stronger appetite when they wake up in the next spring, and all organs of the body will rejuvenate.

It can be seen that the nervous system and muscles of animals are still full of vitality during hibernation, while the new generation is reduced to a minimum. Today, hypothermic anesthesia and hypnotherapy created by medical circles are inspired by this.

Birds and beasts in animals are warm-blooded animals like us, so how do cold-blooded animals and insects survive the long winter?

After long-term observation and research, entomologists finally discovered some mysteries of insect overwintering. In winter, people should add antifreeze to prevent the radiator from freezing. In cold winter, insects will take similar measures to protect themselves.

In winter, it is very important for insects to stay alive and not be frozen. Once the living tissue is frozen, the expanding ice crystals will inevitably destroy the cell membrane and cause fatal trauma. When there is not enough liquid in the cell to maintain the enzyme activity necessary for life, even if it is not completely frozen, it will cause death. So, how do insects solve this problem? They mainly rely on lowering the freezing point of the liquid in the body, thus improving the cold resistance. The way is to produce "antifreeze" in large quantities.

How do insects make antifreeze? How to remove antifreeze after the weather gets warmer? Why should the antifreeze be removed? These questions have not been answered until now.

It is worth adding that scientists have found that frogs can also make their own antifreeze. In the laboratory, scientists freeze many frogs, and after 5-7 days, they slowly thaw them. These frogs are still alive after thawing. After careful analysis and research, scientists finally discovered the secret that frogs can survive. They found a substance commonly used as antifreeze in the body fluids of these frogs: glycerol. Similar to insects, this substance can not be found in the liquid of these frogs in spring.

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