Last year's Cartier Horse of the Year Roaring Lion (Kitten's Joy), who underwent colic surgery on Sunday hours after clearing quarantine for his debut season at Cambridge Stud in New Zealand, had a second operation on Thursday. A statement from Cambridge Stud read, "Roaring Lion had been making positive progress since his initial surgery last Saturday, but began to show symptoms of discomfort overnight. The symptoms were evaluated by the Cambridge Equine Hospital team, with some international consultation, and the decision was made to return to the operating table. "There...