McEwen bred Aberdeen Angus cattle and Southdown sheep. He won championships in the Carlot Lamb classes at the Chicago International multiple times. He also held multiple positions in the ag industry including charter director of the Royal Agricultural Winter Fair, president of the Canadian Co-Operative Wool Growers Ltd. and the Ontario Provincial Winter Fair, as well as the chairman of the Ontario Stallion Enrolment Board.
Photo credit: The Canadian Agricultural Hall of Fame photo