Poor eyesight (myopia) is associated with higher IQ.
232
Intelligent men tend to be more sexually faithful.
31
You can only remember 4 things at a time.
31
Intelligent people have more zinc and copper in their hair.
233
Dolphins have names for one another.
18
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264