Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. biological components
7. animal components

Anotations

Scope note:

The non-deciduous excrescences, often curved and pointed, consisting of an epidermal sheath growing about a bony core on the head of certain mammals such as cattle, sheep, goats, and antelopes, or formed from matted hair on the rhinoceros. Horns serve as displays and as weapons of offence or defense.