Farrier: Disposable surrogate owner; useful for acting out aggression without compromising food supply.
Fence: Barrier that protects good grazing.
Grain: Sole virtue of domestication.
Hitching rail: Means by which to test one's strength.
Horse trailer: Mobile cave bear den.
Hotwalker: The lesser of two evils.
Jump: An opportunity for self-expression.
Latch: Type of puzzle.
Longeing: Procedure for keeping a prospective rider at bay.
Owner: Human assigned responsibility for one's feeding.
Rider: Owner overstepping its bounds.
Trainer: Owner with mob connections.