While there is no sign of cancer in his left testicle, his continuation as a stud has yet to be determined, zoo officials said.
After an unsuccessful career as a stud, he was moved to Grove Porter Farm in Nebraska, where he became a popular tourist attraction, and died in 1959.
The film does try to wrestle the various components into place, as Jack is framed by his former bosses, hauled before a Senate committee, publicly quizzed about his career as a stud, and finally acquitted, to the squeals and whoops of his supporters.
He'd always wanted a Thoroughbred stallion (male racehorses unlikely to win enough races to make them valuable as a stud are often gelded, or neutered, as geldings are usually easier for a rider to control).
("I am looking for a male leaf turtle as a stud," read a sign Michael Musnick taped to his table).
Because of the horse's potential value as a stud, there had been no plans to race Left Bank, a 5-year-old son of French Deputy who is owned by Michael Tabor, next year.
Gato was not successful as a stud, and in 1993, Hancock sold his Derby winner to a farm in Germany for $100,000.
Afterwards, Homer and Bart prepare for Duncan's retirement from racing to start a new life as a stud.
From 1946 through 1969 Jacobs bred winners of 3,513 races, including Affectionately, Straight Deal, Regal Gleam, Searching, Admiring, and Hail to Reason, the last later famous as a stud.
The 1977 Triple Crown winner, Seattle Slew, was another notable racehorse who was reluctant to mate in his first year as a stud.
