Even as he rests a hippo bull makes a yawning gesture to those around him. This behaviour displays the canines and incisors that they use to fight

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Even as he rests a hippo bull makes a yawning gesture to those around him. This behaviour displays the canines and incisors that they use to fight with and inflict serious injury

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Size: 6000px × 4000px
Location: Katavi National Park, Tanzania
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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