Mr Dinos (foaled 14 April 1999) is an Irish-bred, British-trained Thoroughbred racehorse and sire best known for his win in 2003 Ascot Gold Cup. After finishing second on his only start as a juvenile in 2001 he improved to become a top-class stayer in the following year. After winning two minor races in spring he was narrowly beaten in the Queen's Vase and the Northumberland Plate before recording his first major win in the Prix Berteux. In the autumn he finished only fifth in the St Leger but then won the Group One Prix Royal-Oak. He reached his peak in the first half of 2003 when he won the Henry II Stakes and then recorded an emphatic, six-length victory in the Gold Cup. His subsequent career was dogged by injury problems and he never won again, retiring from racing in 2005 with a recor