Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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When cats are happy, they may squeeze their eyes shut.
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The reindeer is the only mammal that can see UV light.
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