There is an endless variety of sleep-strategies among animals, yet it seems a universal behaviour. But why bother with sleep at all? How do animals cope without sleep or the dangers of being unconscious in the wild?

Commentaires

Si vous aimez cette émission, vous aimerez sûrement celles-ci :

• #Blessed
• Horizon: Hubble - The Wonders of Space Revealed
• Addict's Wake