Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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There's a rare breed of pig that looks like a sheep.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Bats sleep 18-20 hours per day.
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The most expensive cow in the world was sold in 2009 for $1.2 million.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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