Dolphins have names for one another.
18
Intelligent people have more zinc and copper in their hair.
233
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
Intelligent men tend to be more sexually faithful.
31
Poor eyesight (myopia) is associated with higher IQ.
232