Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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The largest earthworm on record was found in South Africa and measured 22 feet.
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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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Denmark has twice as many pigs as there are people.
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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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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