Capybara

The capybara (/kæpɪˈbɑːrə/ kap-ih-BAR-uh) or greater capybara (Hydrochoerus hydrochaeris) is the largest living rodent, native to all countries in South America except Chile. It is a semiaquatic herbivore that inhabits savannas and dense forests, living near and in bodies of freshwater and feeding mainly on grasses and aquatic plants. Together with the lesser capybara, it constitutes the genus Hydrochoerus. Its other close relatives include guinea pigs and rock cavies, and it is more distantly related to the agouti, the chinchilla, and the nutria. The capybara is a highly social species that usually lives in groups of 10–20 individuals, but can be found in groups as large as 100. It is hunted for its meat and hide and for grease from its thick fatty skin. Its common name is derived from Tupi ka'apiûara, a complex agglutination of kaá (leaf) + píi (slender) + ú (eat) + ara (a suffix for agent nouns), meaning "one who eats slender leaves", or "grass-eater". The genus name, hydrochoerus, comes from Greek ὕδωρ (hýdor "water") and χοῖρος (choíros "pig, hog") and the species name, hydrochaeris, comes from Greek ὕδωρ (hýdor "water") and χαίρω (chairo "feel happy, enjoy"). The capybara and the lesser capybara are both rodents belonging to the subfamily Hydrochoerinae along with the rock cavies. The living capybaras and their extinct relatives were previously classified in their own family Hydrochoeridae.