Hilarious Animals Showing That They Can Fall Asleep Anywhere They Want

Sleeping While Standing

Sperm whales are the biggest toothed whale and the largest toothed predator, measuring up to 20.5 meters (67.25 feet) in length. Even they need to snooze, and when they do, they do so in an interesting way. Standing on their tails, sperm whales rest. Yes, the world’s second-deepest diving whale may occasionally surface to rest while floating head up. The whales don’t move or even breathe for up to 15 minutes during these sleep.

Sleeping While Standing