Meet the capybara, the definition of laid-back and the undisputed largest rodent on Earth! These South American natives look like a giant guinea pig with webbed feet, and they are masters of aquatic chill. Capybaras are semi-aquatic and rely heavily on water to regulate their body temperature and escape predators. Their eyes, ears, and nostrils are all conveniently placed on top of their heads, allowing them to swim or even snooze with most of their body submerged. They're also incredibly social