The Great Plains wolf was described as a large wolf with light-colored fur. However, some of them had fur that was all white or all black. The body length is 1.7 m (5.6 ft). The average weight of a male was 100lb (45 kg). The heaviest one recorded was 150 lb (58kg). The Native Americans of North Dakota told stories about how only three of these wolves could bring down a bison.