In 1996, research found that having excessive body hair is linked to higher intelligence.
23
You can only remember 4 things at a time.
31
Poor eyesight (myopia) is associated with higher IQ.
232
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Intelligent men tend to be more sexually faithful.
31
Dolphins have names for one another.
18