![]() In the wild, big brown bats have spent 64-66 days in hibernation while in captivity one lasted an incredible 344 days! These little guys don’t have to eat but they do wake up to drink. When bats are left alone, they can be some of the longest hibernators. During hibernation a Black bear’s heart can drop from 40-50 to 8 beats per minute and they can last as long as 100 days without eating or drinking! Bats Like true hibernators, the bear’s heartbeat will slow down and they can go for a long time without having any food. In fact, a pregnant mama bear will have her cubs during the hibernation period. These furry mammals don’t hibernate in the true sense because their body temperature only drops a little bit and they can wakeup at any moment. Only four species of bear are hibernators: American Black Bear, Asiatic Black bear, Brown bear and Polar bear. Its daily energy needs drop by 93% and it can stay asleep for 100 days! Once hibernation is over, it needs seven hours to get back to its normal temperature. It picks a spot under shallow rocks or rotten logs and stays there for up to five months. It isn’t often that you hear about a bird that sleeps the bad weather away, that’s because the Common Poorwill is the only known bird species to hibernate. During hibernation they take only 2-3 breaths a minute and their heartbeat slows down from their normal 120 beats to 3-4 beats a minute! Common Poorwill ( Phalaenoptilus nuttallii) Photo credit ken-ichi Marmots hibernate for up to eight months! They spend the four months they are awake having babies and preparing for the next hibernation. We’ve gathered up ten of the coolest true hibernators and some seasonal deep sleepers like bears in this top ten list.īe sure to leave a comment to tell us which hibernator is your favourite! Alpine Marmots ( Marmota marmota) If this inactive state lasts for a long time during the winter, it is called hibernation, but if it is in a hot climate, it is called estivation. Some animals migrate out of the area while others enter an inactive state, which they stay in until conditions suit them better. When the environment becomes too hostile for an animal, they have to find a way to cope. ![]() In fact there are some animals that, no matter how loud their parents may yell, don’t get up at all, choosing instead to stay asleep all winter! Hibernating the weather away ![]() As the weather gets colder you might find it hard to wake up in the morning, but don’t worry you aren’t the only one. ![]()
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