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
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Poor eyesight (myopia) is associated with higher IQ.
232
In the US, people can be rejected from joining the police force if they are too intelligent.
45