10 Reasons Why Dolphins Are Second-Smartest Creatures

1. They have big brains

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2. They talk to each other

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3. Dolphins have names for each other

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4. They cooperate to hunt

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5. Help humans in distress at sea

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6. Dolphins have passed the “mirror test”

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7. They use tools

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8. They play with seaweed as a toy

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9. Dolphins appear to mourn their dead

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10. They have a complicated social structure

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7 Chilling Secrets That Prove Dolphins Are Dangerous

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