The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
Dolphins have names for one another.
18
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
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
Intelligent people have more zinc and copper in their hair.
233