Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899
       Family Octodontidae Waterhouse, 1840 - octodonts
         Genus Octodon Bennett, 1832 - degus
           1 Octodon bridgesi Waterhouse, 1845 - Bridges's degu
           2 Octodon degus (Molina, 1782) - degu
           3 Octodon lunatus Osgood, 1943 - moon-toothed degu