The arched lower lip of a whale can often make it look like it is smiling! However, this isn't a "real" smile as the blubber in the head of the whale prevents the muscles of the face from reaching the surface.

Kissing can aid in reducing tooth decay. This is because the extra saliva helps in keeping the mouth clean.

In 1917, Margaret Sanger was jailed for one month for establishing the first birth control clinic.

AMAZING FACTS