Dolphins have names for one another.
18
Poor eyesight (myopia) is associated with higher IQ.
232
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Intelligent people have more zinc and copper in their hair.
233
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