The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Jumping fleas can accelerate 50 times faster than the space shuttle.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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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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