How many degrees below zero can bats survive?

It exists all over the world except the North and South Poles and individual islands. Its body temperature varies greatly, reaching 56 degrees Celsius, from 7 degrees below zero to 48 degrees above zero. Therefore, it can adapt to various environmental temperatures. Bats have strong ability to fly at night, light bones and poor eyesight, but their hearing is extremely developed. Most bats can emit ultrasonic waves with a frequency of 20-60 kHz to accurately locate objects or prey.

Metabolism:

Flying is essential for survival, but it also consumes a lot of energy. Flying consumes twice as much energy as running a mammal of the same size. An hour's flight will consume their 10% energy supply, and their heartbeat can reach 1000 times per minute during the flight. High-speed metabolism is easy to damage cells and genetic material, which makes bats evolve superior genetic material repair ability and higher body temperature to improve cell activity, thus increasing metabolic rate.