Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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A scorpion can hold its breath for up to 6 days.
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Cows can sleep standing up, but they can only dream lying down.
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The octopus does not have a blind spot.
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Bats sleep 18-20 hours per day.
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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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