Culpeo (Lycalopex culpaeus) is the largest member of the genus Lycalopex. Body weight ranges from 3.4 to 14 kg, with larger individuals occurring at higher latitudes, and males larger and heavier on average than females (11.65 kg compared to 7.82 kg, respectively). Head plus body length ranges from 445 to 925 mm and tail length from 305 to 493 mm. Culpeos vary in color, with lighter individuals in the northern parts of the range. The chin and belly are white to light tawny. The ears, neck, legs, flanks, and top of the head are tawny or reddish-brown. The area around the tail is usually darker, sometimes dark grey. The tail is bushy and grey with a black tip and a darker area near the rump. In the winter months, the fur becomes longer and denser. Larger size and reddish-brown fur distinguish culpeos from similar species.