The pampas fox (Lycalopex gymnocercus), also known as Azara's fox, or Azara's zorro, is a medium-sized zorro, or "false" fox, native to the South American pampas. The alternative common names are references to Spanish naturalist Félix de Azara.
The pampas fox resembles the culpeo or Andean fox in appearance and size, but has a proportionately wider snout, reddish fur on the head and neck, and a black mark on the muzzle. It has short, dense fur that is grey over most of the body, with a black line running down the back and onto the tail, and pale, almost white, underparts. The ears are triangular, broad and relatively large, and are reddish on the outer surface and white on the inner surface. The inner surfaces of the legs are similar in color to the underparts, while the outer surface is reddish on the forelimbs, and grey on the hindlimbs; the lower hindlimb also bears a distinctive black spot. Adults range from 51 to 80 centimetres (20 to 31 in) in body length, and weigh 2.4 to 8 kilograms (5.3 to 17.6 lb); males are approximately 10% heavier than females.
The Pampas (from Quechua pampa, meaning "plain") are fertile South American lowlands, covering more than 750,000 km2 (289,577 sq mi), that include the Argentine provinces of Buenos Aires, La Pampa, Santa Fe, Entre Ríos and Córdoba; most of Uruguay; and the southernmost Brazilian State, Rio Grande do Sul. These vast plains are a natural region only interrupted by the low Ventana and Tandil hills near Bahía Blanca and Tandil (Argentina), with a height of 1,300 m (4,265 ft) and 500 m (1,640 ft), respectively.
The climate is mild, with precipitation of 600 to 1,200 mm (23.6 to 47.2 in), more or less evenly distributed through the year, making the soils appropriate for agriculture. This area is also one of the distinct physiography provinces of the larger Paraná-Paraguay Plain division. These plains contain unique wildlife because of the different terrains around it. Some of this wildlife includes the rhea, the pampas deer, several species of armadillos, the pampas fox, the white-eared opossum, the elegant crested tinamou, and several other species.
In English Pampas usually refer to the plains around Río de la Plata. Pampas may also refer to: