Intelligent men tend to be more sexually faithful.
31
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
You can only remember 4 things at a time.
31
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
Poor eyesight (myopia) is associated with higher IQ.
232
Intelligent people have more zinc and copper in their hair.
233
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264