Caviidae
Caviidae, the cavy family, is composed of rodents native to South America and includes the domestic guinea pig, wild cavies, and the largest living rodent, the capybara. They are found across South America in open areas from moist savanna to thorn forests or scrub desert. This family of rodents has fewer members than most other rodent families, with 19 species in 6 genera in 3 subfamilies.
Serras de Sudeste
Grazing mammals of the hill range include the Pampas deer ("Ozotoceros bezoarticus"), the gray brocket or guazuvirá deer ("Mazama gouazoubira"), the capybara ("Hydrochoerus hydrochaeris"), the world's largest living rodent, the Molina's hog-nosed skunk and the Pampas fox ("Lycalopex gymnocercus"), and birds include the greater rhea ("Rhea americana") and the red-winged tinamou ("Rhynchotus rufescens"). Jaguars, cougars and ocelots do not exist anymore in this area.