title: Viscacha rat
text: # Viscacha rat
  
  Viscacha rats are a group of rodents in the family Octodontidae. All species are found in Argentina. They are placed in the following genera:
  
  * Genus Octomys
     * O. mimax , mountain viscacha rat, found in the Andes
  * Genus Pipanacoctomys
     * P. aureus, the golden viscacha rat, found near a salt flat
  * Genus Tympanoctomys (4 species, 3 extant), found in desert shrubland near salt flats
     * T. barrerae, the plains viscacha rat
     * T. kirchnerorum, Kirchner's viscacha rat,
     * T. loschalchalerosorum, the Chalchalero viscacha rat
     * †T. cordubensis
  