People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
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The higher someone’s I.Q. the more likely they are to be sleep deprived.
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In 1996, research found that having excessive body hair is linked to higher intelligence.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
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Poor eyesight (myopia) is associated with higher IQ.
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