Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Chordata (phylum)
8. Vertebrata (subphylum)
9. Mammalia (class)

Additional parents:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms
4. living organisms
5. Eukaryota
6. Animalia
7. Chordata
8. Vertebrata
9. Mammalia
10. Placentalia

Narrower term/s

• Rhinocerotidae (family)
• Equidae (family)[+]
  • Hyracotherium (extinct genus)
  • Miohippus (extinct genus)
  • Merychippus (extinct genus)
  • Hippidion (extinct genus)
  • Equus (genus) [+]
    • Equus caballus (species) [+]
      • Equus caballus przewalskii (subspecies)
      • Thoroughbreds (breed)
      • Arabian horses (breed)
      • Belgian horses (breed)
      • Percherons (breed)
      • [horses by size] [+]
      • [horses by use or role] [+]
      • Barb horses (breed)
    • Equus asinus (species) [+]
      • donkeys
    • mules (mammals)
    • Equus hemionus (species) [+]
      • Equus hemionus hemionus (subspecies)
      • Equus hemionus hemippus (subspecies)
      • Equus hemionus kiang (subspecies)
      • Equus hemionus khur (subspecies)
      • Equus hemionus onager (subspecies)
    • asses (mammals) [+]
      • Equus asinus (species) [NP] [+]
      • Equus hemionus (species) [NP] [+]
      • [asses by sex] [+]
    • hinnies
    • zebras (mammals) [+]
      • Equus quagga (extinct species) [NP]
      • Equus grevyi (species) [NP]
      • Equus burchellii (species) [NP]
      • Equus zebra (species) [NP]
    • Equus quagga (extinct species)
    • Equus grevyi (species)
    • Equus burchellii (species)
    • Equus zebra (species)
    • [equines by sex or age] [+]
      • stallions [+]
      • mares (equines)
      • foals [+]

Anotations

Scope note:

Order containing around 15 species of mammals in three families, including horses, asses, zebras, rhinoceroses, tapirs, and kin, characterized as browsing and grazing animals, with an odd number of toes on each hoof, usually large in size, having relatively simple stomachs and being hindgut fermenters, digesting plant cellulose in their intestines rather than a stomach.