Its short, dense fur is grey over most of the body, with a black line running down the back and onto the tail, and pale, almost white, underparts.

[6] The Pampas fox can be found primarily in northern and central Argentina, Uruguay, eastern Bolivia, Paraguay, and southern Brazil.

That revision classified L. g. domeykoanus, L. g. gracilis, and L. g. maullinicus as subspecies of L. griseus, in part due to their falling outside the known present range of L.

The Pampas foxes mostly live a solitary life, but come together as monogamous pairs in the breeding season to raise their young.

[5] Even when raising young together, adult foxes generally hunt alone, marking their territory by defecating at specific latrine sites.

[9] The main threats to the Pampas fox comes from humans hunting them for their fur[13] or to prevent them from attacking livestock; they may be affected by the loss of their natural habitat.

In 2021, a female canid with unusual phenotypic characteristics was found in Vacaria, Rio Grande do Sul, Brazil.