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. Rodentia (order)
11. Castoridae (family)

Anotations

Scope note:

Members of a genus containing two living species of amphibious rodents native to North America, Europe, and Asia. Beavers have short legs, a stout body, a small, broad, blunt head, large chisel-shaped incisor teeth, a broad, oval, horizontally-flattened, scaly tail, palmated hind feet, and a coat of soft fur. They are distinguished by their ability to chew through trunks and cut down trees, constructing huts of mud and wood for habitation, and dams for preserving a supply of water.