Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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A 42-foot sperm whale has about 7 tons of oil in it.
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Sloths take two weeks to digest their food.
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Dogs sometimes fake being sick to get attention.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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