Stable vices and stereotypies in horses — including weaving, crib-biting, and box-walking — are behavioral signs of welfare compromise that indicate unmet behavioral needs in stabled horses.
Stereotypies in horses are behavioral scars of chronic welfare compromise. They develop because horses kept in stables have intense, unmet behavioral motivations — particularly for foraging and social contact — that cannot be expressed normally. Crib-biting develops when horses are weaned early and denied roughage that would occupy them for 16+ hours daily as grazing does. Weaving develops in socially isolated horses denied herd contact and movement. The tragedy is that stereotypies, once established, persist even when management improves because they become neurologically reinforced. Prevention is therefore essential: late weaning onto high-roughage diets, maximum turnout from an early age, and social housing dramatically reduce stereotypy development. Anti-stereotypy devices that block the behavior without addressing its cause are welfare-negative interventions that increase underlying frustration.