In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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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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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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