The Patagonian Weasel has a broad, flat head, small eyes and ears, and a mix of white fur with blackish-brown saddle markings. It is native to the open and semi-open habitats of South America's southern cone, particularly Argentina and Chile. 

This type of weasel feeds on rodents, birds, insects, and lizards. Interestingly, the Patagonian Weasel has a closer kinship with the South American Zorrillas than its North American and Eurasian counterparts. 

It is a solitary animal and communicates through scent marking. Moreover, its reproductive habits remain a mystery, although scientists have speculated that they might align with other weasel species.