Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Caviidae Fischer de Waldheim, 1817 - cavies and Patagonian "hares" Subfamily Caviinae Fischer de Waldheim, 1817 Genus Cavia Pallas, 1766 - cavies Cavia tschudii Fitzinger, 1857 - montane guinea pig