The Patagonian Sheepdog or Spanish: Ovejero Magallánico is a Chilean breed of sheepdog. It was bred in the late nineteenth and early twentieth centuries for sheep-herding work in the Magallanes y la Antártica Chilena Region of the southern part of Chilean Patagonia. It has a long rough coat and is well adapted to the harsh climate of the area. The Kennel Club de Chile publishes a breed standard.