Top Ten Sleepiest Mammals

Sep 7

1 = Lion (20hrs)
1 = Three-toed sloth (20hrs)
3 Little brown bat (19.9hrs)
4 Big brown bat (19.7hrs)
5 = Opossum (19.4hrs)
5 = Water opossum (19.4hrs)
7 Giant armadillo (18.1hrs)
8 Koala (up to 18hrs)
9 Nine-banded armadillo (17.4hrs)
10 Southern owl monkey (17.0hrs)

*Excludes periods of hibernation.