There are approximately three chickens for every human on Earth.
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Cats recognise the voice of their owner, but never evolved to care.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
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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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