Octopuses have three hearts and blue blood.
Fact #1
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Some marine mammals communicate through clicks and whistles.
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Elephants communicate using low-frequency sounds.
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Certain reptiles regulate body temperature through basking.
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Bees have five eyes.
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A polar bear’s sense of smell is extremely powerful.
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Some species of sharks must keep moving to breathe.
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Whales are mammals and must breathe air.
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A hummingbird's heart can beat over 1,000 times per minute.
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