The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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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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