A bull Hippo 'yawns' as a clear warning to other competing bulls to keep clear of him. In the dry season when they hippos have to congregate


A bull Hippo 'yawns' as a clear warning to other competing bulls to keep clear of him. In the dry season when they hippos have to congregate in small wallows there is a lot of aggressive competition for space


Size: 6000px × 4043px
Location: Katavi National Park, Tanzania
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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