There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Dolphins have names for one another.
18
In the US, people can be rejected from joining the police force if they are too intelligent.
45
Intelligent men tend to be more sexually faithful.
31
Intelligent people have more zinc and copper in their hair.
233
Poor eyesight (myopia) is associated with higher IQ.
232