Dolphins have names for one another.
18
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
You can only remember 4 things at a time.
31
Intelligent people have more zinc and copper in their hair.
233
Intelligent men tend to be more sexually faithful.
31