Capybaras are the largest living rodent in the world, and they can reach an adult weight of 150 pounds. These gentle vegetarians resemble giant guinea pigs, except they are semi-aquatic and have webbed feet. Their Latin name, Hydrochoerus, means “water pig,” and they enjoy eating and even resting in quiet bodies of fresh water. They are a peaceful herd animal, with a naturally slow, rabbit-like hop, but when alarmed, they are able to move rapidly across land or through water. Capybaras are native to most of the tropical and temperate parts of South America east of the Andes and can most easily be spotted around twilight.