Are snakes warm-blooded?

The snake is not a warm-blooded animal, but a temperature-changing animal whose body temperature changes with the temperature, because the snake itself does not have a perfect body temperature regulation mechanism to generate and maintain a constant body temperature.

The optimum temperature for snake activity is 20~30℃. In this suitable range, the growth rate of snakes increases linearly with the increase of temperature. For example, a study shows that adult cobras gain weight every month at 28℃, but when the temperature exceeds 35℃, they will become anorexia, get sick and die at 40~45℃. ?

Air humidity also has a great influence on snakes, and 50~70% is appropriate. Too high is easy to get mildew pneumonia, and the mortality rate in the south is high; Too low (such as the spring drought in the north) is not conducive to molting (especially pregnant snakes), affecting their continued growth and even causing death.

Extended data:

The severe cold of 0℃ is the deadly low temperature of snakes, so when the temperature drops below 13℃ in late autumn, you must find various underground caves to hibernate. Take Beijing as an example. Although the average surface temperature was as low as -5.4℃ in June of 5438+/kloc-0, the temperature at the underground 1.6 meters was still 7.5℃. ..

And the temperature changes very little, which is very suitable for snakes to hibernate. For this ecological rhythm of snakes, because China is the coldest region in the same latitude in the world in winter, snakes hibernate for the longest time (three months in the south, four to six months in the north, and seven months in the Changbai Mountain Agkistrodon).