Chacoan mara the capybara, and guinea pigs. Chacoan maras are closely related to the other member of the genus "Dolichotis", the Patagonian mara. Maras are the fourth largest rodent in the world after the capybaras, beavers and porcupines . Though the mara may look like a rabbit, the rabbit is not actually a rodent and therefore not as closely related to the mara as one might expect. Chacoan mara The Chacoan mara, Dolichotis salinicola, is a relatively large South American rodent of the cavy family. They are a close relative of the better known Patagonian mara. The Chacoan mara lives in the
Guinea pig stronger than a guinea pig and may cause intentional or inadvertent injury. The guinea pig's natural diet is grass; their molars are particularly suited for grinding plant matter and grow continuously throughout their life. Most mammals that graze are large and have a long digestive tract; guinea pigs have much longer colons than most rodents, but they must also supplement their diet by eating their feces (coprophagy) . However, they do not consume all their feces indiscriminately, but produce special soft pellets, called cecotropes (or caecal pellets), which recycle B vitamins, fiber, and bacteria required for proper digestion. The cecotropes