Sleep is a strange fact of life for (nearly) all sentient life forms. It is a time for growth and regeneration, lying low out of harm’s way, and for some animals, dreaming of past events or conjuring curious premonitions. Depending on each species’ environment and metabolism, sleep habits can range from incredibly minimal to nearly all-encompassing. These nine animals bank the most hours dozing each day.
1. Koala – 18–22 Hours/Day
2. Sloth – 15-20 Hours/Day
3. Little Brown Bat – 19.9 Hours/Day
4. Giant Armadillo – 18.1 Hours/Day
5. Python – 18 Hours/Day
5. North American Opossum – 18 Hours/Day
7. Owl Monkey – 17 Hours/Day
8. Human Infants – 16 Hours/Day
9. Tiger – 15.8 Hours/Day
10. Tree Shrew – 15.8 Hours/Day
