Amazing Animal Sleep Schedules........
* Thrushes take hundreds of power naps a day, a few seconds at a time, in midflight.
* Otters sleep floating on their backs, sometimes holding paws with their friends so they don't drift apart.
* Giraffes sleep only 20 minutes a day, often curled up with their heads nestled on their own rumps.
* Brow bats, on the other hand, sleep 19 hours a day - upside down.
* But nobody beats the desert snail, which has been recorded sleeping for 4 years at a time.