MDH Pty Ltd is one of Australia's largest beef cattle operations, unique in the fact that the company is both family owned and operated. The McDonald family represents 7 generations of beef producers and 190 years of experience in Australian agriculture.

With a wide geographical spread of country in Australia's vast Queensland outback, MDH Pty Ltd runs 150,000 head of cattle across 14 properties, encompassing an irrigated farm and the company owned "Wallumba" feedlot on the Western Darling Downs.