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)
10. Artiodactyla (order)
11. Hippopotamidae (family)
12. Hippopotamus (genus)

Anotations

Scope note:

Species of thick-skinned, herbivorous, even-toed hoofed mammals having a barrel-shaped, nearly hairless body, short legs, a large head, and a huge mouth with very large incisor and canine teeth; native to Africa, living in or near rivers, lakes, and swamps.