Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
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The colossal squid has the largest eyes in the world.
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