New research shows wild sloths sleep less than captive sloths
May 14, 2008
Writing in the journal Biology Letters, Niels Rattenborg of the Max Planck Institute for Ornithology and colleagues report that wild sloths sleep less than 10 hours per day. By comparison, captive sloths sleep for around 16 hours per day.
"In terms of brain function, sloths may not be as slothful as was previously thought," Rattenborg told Nature news.
Sloth in Panama
Rattenborg speculates that captive sloths may sleep more than wild sloths due to boredom.