Early American humans hunted car-size armadillos and used their shells for houses.
12
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
You can't tickle yourself.
29
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Only humans shed emotional tears.
331