Updated: Mon, 05 Nov 2012 00:00:00 GMT | By Brian Pedley
Creatures that sleep strangely

Duck



Duck (© RUSSELL CHEYNE/Newscom/RTR)
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  • Duck (© RUSSELL CHEYNE/Newscom/RTR)
  • Bats (© MARCO GARCIA/Newscom/RTR)
  • Walrus (© Getty Images)
  • Creatures that sleep strangely: Hazel dormouse (© Rex Features)
  • Creatures that sleep strangely: Giraffe (© Rex Features)
  • Frog (© Jay Town/Newspix/Rex Features)
  • Creatures that sleep strangely: Dolphin (© Rex Features)
  • Albatross (© MARCO GARCIA/Newscom/RTR)
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