Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Carnivora Bowdich, 1821 - carnivores
       Suborder Caniformia Kretzoi, 1943
         Family Canidae Batsch, 1788 - dogs, wolves, coyotes, jackals, and foxes
           Genus Vulpes Frisch, 1775 - foxes
             Vulpes lagopus (Linnaeus, 1758) - arctic fox
               1 [Vulpes lagopus lagopus] (Linnaeus, 1758)
               2 Vulpes lagopus beringensis Merriam, 1902
               3 Vulpes lagopus fuliginosus (Bechstein, 1799)
               4 Vulpes lagopus pribilofensis Merriam, 1902