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.
17
Poor eyesight (myopia) is associated with higher IQ.
232
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
Dolphins have names for one another.
18
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
In 1996, research found that having excessive body hair is linked to higher intelligence.
23