The Giant Water-Hog: Anatomy of the Capybara The Capybara (Hydrochoerus hydrochaeris) is the world's largest rodent, a semi-aquatic specialist perfectly adapted for the wetlands of South America. This footage highlights their specialized facial anatomy, allowing them to remain nearly entirely submerged while keeping their sensory organs above the waterline. We examine their partially webbed feet, which provide efficient propulsion through water and stability on muddy banks, and their unique soci