Patagonian weasel not been thoroughly studied in the wild, and knowledge of its behavioral patterns is unsure. It reportedly has been kept as a working pet by local ranchers to destroy rodents. Patagonian weasel The Patagonian weasel ("Lyncodon patagonicus") is a small mustelid that is the only member of the genus "Lyncodon". Its geographic range is the Pampas of western Argentina and sections of Chile. An early mention of the animal is in the Journal of Syms Covington, who sailed with Charles Darwin on his epic voyage aboard "HMS Beagle". The Patagonian weasel has a head and body length of , with
Patagonian Desert contributing to the gravel sediments covering parts of the Patagonian. The desert is quite windy as well, a result of the rain shadow effect and descending cool mountain air. This wind helps make the Patagonian one of the largest sources of dust over the South Atlantic Ocean. On the west the Patagonian grasslands portion of the Patagonian Desert are bounded by nothofagus forests of the Magellanic subpolar forests. Volcanic rocks covers more than 120,000 km of the Patagonian Desert, mainly in the "Somun Cura Massif" (i.e. North Patagonian Massif) and the "Deseado Massif". Some other volcanic areas include the Pali-Aike