> What's the largest living rodent in the world?And the answer: capybara. Photo Courtesy: Stephen Meese/FotoliaRelated to the guinea pig but much bigger,capybaras are semi-aquatic mammals, found near bodies of water throughout SouthAmerica. They're a highly social species, and can be found in groups of 10 to 20individuals.In terms of rodents of unusual size, capybaras win the prize. These pig-likecreatures are agile in water, with webbed feet and high, alert heads. They areable to move smoothly through high grass to avoid predators, even earning thenickname kapyiva, meaning "master of the grass" in one Native Amazonianlanguage. Such a feat is a handy one for these herbivores – predators such asjaguars, pumas, caimans, snakes and birds of prey all love to feast on packs ofcapybaras. When confronted with danger, capybaras can dive underwater to hold their breathfor over five minutes. To come up for air, they peep just the tops of their headout of the water while remaining comfortably (and safely) submerged. Theserodents are so comfortable in water, they can even doze off. To learn more about the guinea pig’s larger cousin, check out this[https://www.nationalgeographic.com/animals/mammals/c/cabybara-facts/] NationalGeographic article, and check out the video below.