Three-toed sloths have a reputation for being some of the sleepiest of all animals, largely due to a single study, which found that captive sloths snooze for 16 hours a day. That certainly seems like ...
Brown-throated three-toed sloths living in rainforest trees slept at least six hours less than the 16 hours a day previously recorded for sloths in a lab, says Niels Rattenborg of the Max Planck ...
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