Lab tests of animal sleep may have been too cushy or boring
Sloths aren’t as slothful when tested for sleep in their rainforest trees instead of in the lab.
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 Institute for