The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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The colossal squid has the largest eyes in the world.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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The Basenji dog is the only dog that is not able to bark.
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