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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A cow produces around 200,000 glasses of milk in her lifetime.
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Cats and dogs can hear ultrasound.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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Dolphins have names for one another.
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