The maned wolf (Chrysocyon brachyurus) is the largest canid of South America, resembling a large fox with reddish fur.

This mammal is found in open and semi-open habitats, especially grasslands with scattered bushes and trees, in south, central-west and south-eastern Brazil (Mato Grosso, Mato Grosso do Sul, Minas Gerais, Goiás, São Paulo, Federal District and recently Rio Grande do Sul), Paraguay, northern Argentina, Bolivia east and north of the Andes, and far south-eastern Peru (Pampas del Heath only). It is very rare in Uruguay, being possibly extirpated . IUCN lists it as near threatened, while it is considered vulnerable by the Brazilian government (IBAMA). It is the only species in the genus Chrysocyon. It is locally known as aguará guazú (meaning "large fox" in the Guarani language), lobo de crin, lobo de los esteros or lobo colorado, and as lobo-guará in Brazil. It is also called borochi in Bolivia.

The maned wolf has often been described as "a red fox on stilts" owing to its similar coloration and overall appearance, though it is much larger than a red fox and belongs to a different genus. The adult animal stands 67 to 107 cm (26 to 42 in) tall at the shoulder, averages 149 cm (59 in) in total length and weighs 20 to 34.09 kg (44 to 75.2 lb). The maned wolf is the tallest of the wild canids. The long legs are probably an adaptation to the tall grasslands of its native habitat. Fur of the maned wolf may be reddish brown to golden orange on the sides with long, black legs and a distinctive black mane. The coat is further marked with a whitish tuft at the tip of the tail and a white "bib" beneath the throat. The mane is erectile, and is typically used to enlarge the wolf's profile when threatened or when displaying aggression.