In the US, people can be rejected from joining the police force if they are too intelligent.
45
You can only remember 4 things at a time.
31
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
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Dolphins have names for one another.
18
Poor eyesight (myopia) is associated with higher IQ.
232