Available on Smithsonian Channel, Prime Video, Hulu
All animals sleep--but few do so in exactly the same way. Horses snooze standing up, and snakes sleep with their eyes wide open. As for some species of jellyfish, they sleep despite lacking a brain! Uncover some of the more unusual features of animal slumber, many of which remain a mystery to us.
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.