Yawns are more contagious among people with closer relationships.
163
Obsessive nose picking is called Rhinotillexomania.
101
It is impossible to hum if your nose is plugged.
366
In Japan, more adult diapers are sold than baby diapers.
50
There's a rare breed of pig that looks like a sheep.
14
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15
