Octopuses can solve simple puzzles and open jars.
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A giraffe's neck contains the same number of vertebrae as a human's.
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Some species of jellyfish can shrink and regrow their bodies.
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Some mammals hibernate during winter.
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Some species of crabs can regenerate lost claws.
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A hyena’s jaw is powerful enough to crush bone.
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Some species of birds form lifelong pair bonds.
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Certain insects communicate using vibrations.
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