Available on Smithsonian Channel, Prime Video, Hulu
Owls and foxes are born with undeveloped brains. And to grow, they need a special kind of deep sleep known as REM, or rapid eye movement--a state marked by brain regeneration, memory development, and a lot of movement. Take an intriguing look into the role of sleep in helping different species develop.
Nov 3, 20172 min
Nov 3, 2017
English (United States) (CC)
Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.