Capybara

The Capybara (Hydrochoerus hydrochaeris) is a giant cavy rodent native to South America. It is the largest living rodent in the world.  Its close relatives include guinea pigs and rock cavies, and it is more distantly related to the agouti, the chinchilla, and the coypu. 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.