According to one of his longstanding clients, Arthur Hancock, Dr. Robert Hunt may be only the third best veterinarian in Kentucky. So who are his two rivals? "Dr. Green," Hancock replies. "And Dr. Time." Besides these complementary therapies of grazing and rest, however, he is adamant that an ailing Thoroughbred could have no better helper in the Bluegrass than the Hagyard surgeon: a byword for dedication, integrity and horsemanship. Determinedly self-effacing as he is, Hunt readily acknowledges that Hancock's two other "doctors" have contributed much to his own work. In...