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As animals (including humans) sleep, brain waves change during the various sleep cycles.

One of the main differences between hibernation and sleep is the amount of brain activity. Also, a hibernating animal is very difficult to wake and can even appear sleep deprived after they come out of hibernation. Although all these things happen during sleep, the changes are only slight and nowhere near as dramatic as in a hibernation animal. Heart and breathing rates also slow down significantly. For instance, metabolic rate drastically drops, as does body temperature. Hibernation differs from sleep as there are important physiological changes that take place when an animal hibernates. But, hibernation is not the same as sleep, instead, it is an extended form of torpor. You may be tempted to think that hibernating animals will beat all the above real-life Snorlaxes for length of sleep, if we look outside of a 24-hour period. Alternatively, they will sleep in a behavioural sleep mode, with their eyes shut while they’re suspended from a tree. These animals can sleep in an awake-alert state, where their eyes are open and they even blink. When they sleep, they can do this using two ‘modes’. They’re active for 2-3 hours at a time, and then they snooze. Unlike nocturnal animals that have made the list, the brown-throated three-toed sloth sleeps during the day and night. The brown-throated three-toed sloth ( Bradypus variegatus) sleeps a lot! In fact, this sloth sleeps for about 14 to 16 a hours a day. Sloths are known for being slow creatures, so it makes sense that they’re not only slow but sleepy too. They dig these burrows themselves using their third claw like a spade, creating their own bedroom for this long old sleep. Giant armadillos essentially spend all day in their burrow, sleeping the day away. Another nocturnal animal who needs to sleep a lot, this creature can sleep for 16-18 hours a day. One of the largest species of armadillo, the giant armadillo ( Priodontes maximus) are powerful and covered with tough bony scales. Being nocturnal, these animals have very little to do during the day, so they literally sleep the day away. Hedgehogs (including the European Hedgehog) sleep for about 18 hours a day. But we thought we’d showcase our own European hedgehog ( Erinaceus europas) when looking at hedgehogs and their love of sleep. Like bats, they’re nocturnal, so they sleep during the day. There are actually quite a few hedgehog species, which are all big on sleep. These bats roost upside down in buildings, caves, trees, and even piles of wood. However, this long time asleep is thought to be a way to conserve energy. As this number is from captive bats, in the wild it may be different. But the little brown bat ( Myptis lucifugus) has been seen to sleep for an average of 19 hours a day in captivity. Little brown batĪll bats tend to sleep a lot, as they’re nocturnal. You could probably say that all koalas do is eat and sleep! 2. Sounds strange, doesn’t it?!īecause of the food they eat, and the small number of nutrients and energy they get from that food, Koalas spend most of their time sleeping after eating. Koalas eat eucalyptus leaves, which is actually toxic, so their digestive system has a hard time processing this food and can only get limited nutrients from it. Koalas ( Phascolartos cinereus) really are a real-life Snorlax! These marsupials can sleep for 18 to 22 hours a day.

Here are five animals that sleep the most: 1. To rank these sleepy animals, we’ve looked at which animals sleep the most in a 24-hour period. Younger animals tend to need more sleep as they’re growing. When asleep, animals are resting, recuperating and processing the information they’ve taken in during their waking time. Here, we take a look at which animals sleep the most and would give the famous sleepy Pokémon Snorlax a run for his money! Which animals sleep the most? There are numerous factors that can affect how much sleep an animal needs.

It all depends on how they’ve evolved, their needs, their habitat and the food they eat. On average, humans need about 8 hours of sleep a night, but certain animals need much more, while others need substantially less. But how animals sleep can be very different to how humans sleep.