Intelligent people have more zinc and copper in their hair.
233
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
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
Dolphins have names for one another.
18
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
You can only remember 4 things at a time.
31
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264