Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
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A 42-foot sperm whale has about 7 tons of oil in it.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
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