The Basenji dog is the only dog that is not able to bark.
4
During the Black Plague, it was thought that bad smells were the cause of the plague. "Plague Doctors" therefore wore masks with long beak-like noses stuffed with flowers or smoke to hide the smells.
19
You can't tickle yourself.
29
Jason Earles played as a teenager in Hannah Montana, but he was actually born in 1977.
6
False teeth are often minutely radioactive.
214