The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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The Basenji dog is the only dog that is not able to bark.
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When cats are happy, they may squeeze their eyes shut.
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