Supported by


How the Animal Kingdom Sleeps

Dec 28, 2017 | 5 videos
Video by The Atlantic

Sleep is universal in the animal kingdom, but each species slumbers in a different — and often mysterious — way. Some animals snooze with half their brain, while others sleep for just two hours a day (without suffering sleep deprivation). In this episode of Animalism, Ed Yong guides us through the latest research on how creatures catch their z’s.

We want to hear what you think about this article. Submit a letter to the editor or write to

Authors: Ed Yong, Jackie Lay, Brian Jimenez

About This Series

Ed Yong looks at the way animals live and explains why mammals evolved to behave in certain ways.