Bears: Bears, such as black bears and grizzly bears, are known to hibernate during winter. They enter a state of reduced activity but don't experience a drastic drop in body temperature like other hibernating animals.
Ground Squirrels: Ground squirrels, including species like the thirteen-lined ground squirrel and the golden-mantled ground squirrel, undergo true hibernation. They prepare by storing food in their burrows and lower their body temperature to match their surroundings.
Bats: Many species of bats hibernate during winter. They seek out caves, mines, or other sheltered places where they can hang upside down in clusters to conserve energy and reduce heat loss.
Hedgehogs: Hedgehogs hibernate during winter to survive the cold months when food availability is low. They build nests in leaf piles or under shrubs and lower their body temperature to conserve energy.
Snakes: Some snake species, like the timber rattlesnake and garter snake, go into a state of brumation, which is similar to hibernation. They seek out underground dens or burrows to escape the cold temperatures.
Groundhogs: Groundhogs, also known as woodchucks, are famous for their association with Groundhog Day. They hibernate during winter in burrows they create underground, where they enter a deep sleep until spring.
Turtles: Turtles, including box turtles and painted turtles, can hibernate in the water or bury themselves in mud or soil. They slow their metabolic rate and breathe through specialized structures, such as their cloaca, during this period.
Fat-tailed Dwarf Lemurs: These small primates native to Madagascar enter a state of hibernation called torpor. They find tree holes and reduce their metabolism, lowering their body temperature and surviving on stored fat reserves.