Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Hydrochaeridae (Gray, 1825) Cabrera, 1961 - capybara see Family Hydrochoeridae Gray, 1825 1 Genus Hydrochaeris Brunnich, 1772 - capybara see Genus Hydrochoerus Brisson, 1762