The ancestor of all domestic cats is the African Wild Cat which still exists today.
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During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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Cows can sleep standing up, but they can only dream lying down.
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Cats and dogs can hear ultrasound.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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