Crows hold funerals — when one dies, others gather around the body, apparently to assess threats.
Fact #3819
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Cats have a reflective layer in their eyes that improves night vision.
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The use of defibrillators can restore normal heart rhythm.
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Fingernails grow faster than toenails.
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The Code of Hammurabi established early written laws.
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Learning involves changes in neural connections.
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Your stomach replaces itself every few days.
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Some animals sleep for years.
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The human body contains about 206 bones.
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