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
Santa Catarina's guinea pig Santa Catarina's guinea pig Santa Catarina's guinea pig or Moleques do Sul cavy, "Cavia intermedia", is a rare guinea pig species of southeastern South America. The small mammal is endemic to the small coastal island of Moleques do Sul Archipelago, located in the state of Santa Catarina in southern Brazil. The archipelgao formed about 8,000 years ago, having a total of three islands with a surface area of only . "Cavia intermedia" is phylogenetically comparable, and said to be a common ancestor of the species "Cavia magna", who also inhabited the island. The guinea pig's geographical distribution of only is