Changes of small animals before and after being frightened

Small animals wake up from hibernation.

"A hundred bugs wake up after being startled" refers to this phenomenon.

In the vast areas of China, especially in the north, with the arrival of winter cold, many warm-changing animals, such as common insects (bees, beetles, flies, etc. ), fish (carp, crucian carp, catfish, loach, etc. ), amphibians (frogs, toads, salamanders, etc. ), reptiles (snakes, lizards, turtles, etc. ) They will be paralyzed for months in nests, under bark, in the soil, in the sludge at the bottom of the pool and in other hidden places, and will wake up next spring. ?

Animal hibernation is really unique. Snails seal their shells with their own mucus. When winter comes, most insects hibernate in the form of pupae or eggs, not adults or larvae.

Bears breathe normally when they hibernate, and sometimes they 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, these cubs were born during hibernation.

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 Walker. If you put it on the table, you can't wake it up with a needle. 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 entrance of the trachea. Biologists once picked up the hibernating hedgehog and soaked it in warm water for half an hour before seeing it wake up.