Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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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 colossal squid has the largest eyes in the world.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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The largest earthworm on record was found in South Africa and measured 22 feet.
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