Capybara

The capybara (Hydrochoerus hydrochaeris) is the largest rodent in the world; followed by the beaver, porcupine and mara. Its closest relatives are agouti, chinchillas, coypu, and guinea pigs. Native to South America, the capybara inhabits savannas and dense forests and lives near bodies of water. It is a highly social species and can be found in groups as large as 100 individuals, but usually lives in groups of 10–20 individuals.