Changing flow patterns characterize the North American cattle industry, which are having a significant impact on all aspects of Canadian agriculture. A brief review of important changes taking place in the feeder cattle industry is given together with an analysis of forces influencing the changing interregional economic relationships.The results suggest an increasing rate of adjustment may be needed in the future as the economic variables and technological advances responsible for much of the change in the past continue to influence the Canadian cattle industry. The impact of change will not occur evenly across all areas and segments of the industry with the interregional trends that have developed particularly the expansion in flows from Western Canada to the Western United States showing no sign of slowing down. Eastern Canada may be under increasing pressure to expand either its imports of feeder cattle and dressed beef or develop its own feeder supply.