The largest known rodent is the capybara. These rodents can weigh up 66 kilograms as adults and may span more than 140 cm in length. Capybaras are gentle in nature and can be seen in many zoos.
The capybara is a semiaquatic animal endemic to temperate and tropical zones of South America. They are equipped with webbed feet and are excellent swimmers. Their lives are spent primarily in the water, where they mate and hide from predators such as anacondas and jaguars. Capybaras submerge themselves underwater, as well, leaving their noses exposed to the air. These giant rodents are herbivores that feed primarily on river plants and tree bark. They also consume their own feces in order to assist with digestion of grass.