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A large hippopotamus yawning in golden savannah
A hippopotamus opens its mouth wide in a sunlit savannah....
A hippopotamus yawning in bright green algae-filled water
A hippopotamus opens its mouth wide while partially submerged in bright green algae-covered water....
A large brown hippopotamus opening its mouth widely in greenish water
A hippopotamus opens its mouth wide while partially submerged in greenish water....
A close - up of a brown hippopotamus partially submerged in greenish water
A brown hippopotamus is partially submerged in greenish water....
A brown and black hippopotamus partially submerged in clear turquoise water
A hippopotamus is partially submerged in clear turquoise water with its head above the surface....
A large brown hippopotamus swimming in greenish water with head above
A hippopotamus floats in greenish water with its head above the surface....
A hippopotamus underwater with wide-open mouth revealing large teeth
A hippopotamus underwater has its mouth wide open, displaying large teeth....
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