Inhabiting grasslands and shrublands from sea level to 4,000m, guanacos, also spelled huanacos, are found from southern Peru down the Andean zone of Chile and Argentina, western Paraguay to Tierra del Fuego and Navarino Island.
Guanacos are herbivores that can inhabit dry areas and forego drinking for long periods. They are versatile foragers, both browsing and grazing on grasses and plants.