The capybara 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 water and feeding mainly on grasses and aquatic plants.
Capybaras, which are closely related to guinea pigs, are the largest rodents and can weigh up to 79 kg.