Bats can go into a state of physical and mental inactivity from a couple of hours to a month based on the temperatures.
Snakes too go into a state of hibernation when the temperature drops, however, the period of inactivity differs based on their geographical location.
Out of all bees, Bumblebees hibernate underground for the colder months.
Depending on the species and weather conditions, snails can hibernate for as long as several months.
Skunks also go into a period of inactivity during the winter, during which they breathe slower and have a lower temperature and heart rate.
Bears in northern areas of the US and Canada can hibernate for up to eight months because of the harsh weather conditions.
Groundhogs are true hibernators as their period of inactivity or hibernation can go up to five months, during which they lose as much as a fourth of their body weight.