A Hippo dozes in the Ruaha River. They sleep nearly submerged but instinctively raise the muzzle so the nostril are clear of the surface.

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A Hippo dozes in the Ruaha River. They sleep nearly submerged but instinctively raise the muzzle so the mostril are clear of the surface to make breathing easy. They are very good at conserving energy.

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Size: 5500px × 3667px
Location: Ruaha National Park, Tanzania
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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