Sloths are always thought of as the laziest creatures in the animal kingdom, but scientists have proved they're not as sleepy as imagined.
They found that caged sloths sleep for more than 16 hours a day, but in the wild they have less than 10 hours.
Experts caught sloths in the rainforest in Central America and fitted them with a sleep monitoring device.
The results of their study on the slow-moving creatures may help people who have problems with sleeping.
The three-toed sloth is the slowest mammal in the world
Animals vary in the amount of sleep they need. Pythons sleep for 18 hours a day, while giraffes survive on just two hours.
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