#order_Perissodactyla__Perissodactyla  nonruminant ungulates: horses; tapirs; rhinoceros; extinct forms
  supertype:  animal_order  the order of animals
  member of:  subclass_Eutheria
  member:  odd-toed_ungulate__perissodactyl__perissodactyl_mammal__perissodactylmammal  placental mammals having hooves with an odd number of toes on each foot
  member:  family_Equidae__Equidae  horses; asses; zebras; extinct animals
     member:  genus_Equus__Equus  type genus of the Equidae: only surviving genus of the family Equidae
        member:  horse__Equus_caballus  solid-hoofed herbivorous quadruped domesticated since prehistoric times
           member:  foal  a young horse
        member:  ass__as  hardy and sure-footed animal smaller and with longer ears than the horse
        member:  domestic_ass__donkey__Equus_asinus  domestic beast of burden descended from the African wild ass; patient but stubborn
        member:  mule  sterile offspring of a male donkey and a female horse
        member:  hinny  sterile offspring of a male horse and a female donkey or ass
        member:  wild_ass  any of several plain-colored equine mammals of Asia and northeast Africa
        member:  zebra  any of several fleet black-and-white striped African equines
        member:  Equus_quagga__quagga  mammal of South Africa that resembled a zebra; extinct since late 19th century
     member:  equine__equid  hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck
     member:  genus_Hyracotherium__Hyracotherium  extinct horse genus; formerly called genus Eohippus
        member:  eohippus__dawn_horse  earliest horse; extinct primitive dog-sized 4-toed Eocene animal
     member:  genus_Mesohippus  a genus of Equidae
        member:  mesohippus  North American 3-toed Oligocene animal; probably not directly ancestral to modern horses
     member:  genus_Protohippus  a genus of Equidae
        member:  protohippus  Pliocene horse approaching donkeys in size
     member:  female_horse__mare  female equine animal
  member:  family_Rhinocerotidae__Rhinocerotidae__rhinoceros_family  rhinoceroses
     member:  rhinoceros__rhino  massive powerful herbivorous odd-toed ungulate of southeast Asia and Africa having very thick skin and one or two horns on the snout
     member:  genus_Rhinoceros  type genus of the Rhinocerotidae
        member:  Indian_rhinoceros__Rhinoceros_unicornis  having one horn
        member:  woolly_rhinoceros__Rhinoceros_antiquitatis  extinct thick-haired species of arctic regions
     member:  genus_Ceratotherium__Ceratotherium  African genus
     member:  genus_Diceros__Diceros  most common species in Africa
        member:  black_rhinoceros__Diceros_bicornis  African rhino; in danger of extinction
  member:  family_Tapiridae__Tapiridae  tapirs and extinct related forms
     member:  genus_Tapirus__Tapirus  type genus of the Tapiridae
        member:  tapir  large inoffensive chiefly nocturnal ungulate of tropical America and southeast Asia having a heavy body and fleshy snout

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