Cats conserve energy by sleeping for an average of 13 to14 hours a day.

For some time Frederic Chopin, the composer and pianist, wore a beard on only one side of his face, explaining: "It does not matter, my audience sees only my right side."

The smallest stamp in the world was issued in 1863 by the Columbian state of Bolivar and measured 9.5 x 8mm.

AMAZING FACTS