Hippos can open their mouths to an astonishing 150 degrees—wide enough to show off massive teeth and powerful jaws. While it often looks like a big yawn, this display is usually a form of communication, helping hippos establish space and show dominance rather than an invitation for a snack. At the Cincinnati Zoo, seeing a hippo open wide is a jaw-dropping reminder of just how powerful these animals are. Big smile… big respect. | Cincinnati Zoo & Botanical Garden
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Hippos can open their mouths to an astonishing 150 degrees—wide enough to show off massive teeth and powerful jaws. While it often looks like a big yawn, this display is usually a form of communication, helping hippos establish space and show dominance rather than an invitation for a snack. At the Cincinnati Zoo, seeing a hippo open wide is a jaw-dropping reminder of just how powerful these animals are. Big smile… big respect. | Cincinnati Zoo & Botanical Garden
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