The Secret World of Animal Sleep: Strange Slumber

  • 3m
  • 4K
  • TV-G

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.