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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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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The cat brain weighs about 30g.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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A lion in the wild usually makes no more than twenty kills a year.
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