5The Green Monkey – Price: $16 million
The Green Monkey is one of the most expensive horses in the world, worth $16 million.
Foaled on February 4, 2004 in Florida, the American Thoroughbred racehorse is a descendant of both Northern Dancer and Secretariat.
Sold in 2006 as a 2-year-old colt, The Green Monkey made his racing debut on September 15, 2007, in a 6-furlong maiden race at Belmont Park in Elmont, New York.
The horse finished third behind winner Roi Maudit and runner-up Sixthirteen.
The Green Monkey was officially retired February 12, 2008, after failing to break his maiden in his 3 career starts.
