Viscacha rat
# 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
