In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Intelligent people have more zinc and copper in their hair.
233
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
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
You can only remember 4 things at a time.
31
Poor eyesight (myopia) is associated with higher IQ.
232
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264