What is it about the Alaskan tree frog that can come back from the dead?

In the northern hemisphere winter, the earth is covered with silver, and in high latitudes, the temperature even drops to minus forty or fifty degrees Celsius, which is a huge test for the survival of living things.

On top of that, even if humans have warm clothing, they are still at risk of frostbite when they are outdoors for a long time, so it's hard to imagine how animals living at high latitudes survive this long winter.

<> people can't help but wonder, which animal on earth is the most resistant to frost? According to biologists, Alaskan tree frogs won the crown because they not only did not hibernate, but also survived at minus 30, which can be said to be a miracle of life.

Compared with many of its peers, the Alaskan tree frog has less of a habit of hibernation, because it is generally believed that frogs are one of the most cold-sensitive animals, they do not have thick fur and fat, and can only hide in burrows every winter to minimize their calorie consumption.

But the Alaskan tree frog is different, they do not have burrows, they do not hibernate, whenever the temperature drops below zero, they will choose to freeze themselves, and the Alaskan tree frog that becomes an "ice sculpture" is slowly covered in ice and snow. However, they do not die because of this, but will bounce back when the temperature rises the following year.

Therefore, scientists have conducted in-depth research on the Alaskan tree frog, and they are surprised to find that this animal has five times more glucose in its body than other frog species, which is the main reason why the Alaskan tree frog can withstand the cold.

During the long winter, the Alaskan tree frog may thaw due to different environmental factors, drop in temperature again and then freeze again, and so on, and may go through several cycles. With the help of high glucose levels, they still maintain their vital signs and rarely freeze to death.

Until then, it was thought that water bears were the best fighters against the cold, but they also needed to go dormant, which is fundamentally different from the Alaskan tree frog. The latter's ability to survive in cold regions on its own shows the infinite charm of nature.

As research continues, we may be able to find even better hunters to protect against the cold, but the capabilities of the Alaskan tree frog are already eye-opening.

The Alaskan tree frog is like an ice sculpture frozen in winter, but it does not die, but its heartbeat will become very slow and slow, so slow that it is close to stopping, and even only jumps once in ten days and half a month, in this winter, the ice on the Alaskan tree frog will continue to melt and freeze, and it will continue until the end of winter.

Because tree frogs do not hibernate in burrows, they become ice sculptures at low temperatures, and people think they are dead, but they have the energy to sustain life in their bodies, and when the temperature warms, their bodies thaw and resume their activities.

Because whenever the temperature drops below 0 degrees, the Alaskan tree frog chooses to freeze (similar to hibernation to reduce energy consumption), and with the help of high glucose content, they still maintain their vital signs and "thaw" when the temperature rises.