In the US, people can be rejected from joining the police force if they are too intelligent.
45
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
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
Intelligent people have more zinc and copper in their hair.
233
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