Columbian drug-lord Pablo Escobar kept four Hippos in his estate before his death in 1993. Deemed too much hassle to move by authorities, his Hippos were left there and have since bred and escaped becoming an invasive species of Columbia.

The Christmas season begins after sunset on December 24th and lasts until January 5th. This is also known as the Twelve Days of Christmas.

All of David Letterman's suits are custom made - there are no creases in his suit trousers.

AMAZING FACTS