Stereotypic behaviours in horses - crib-biting, weaving, box-walking - indicate compromised welfare and are largely preventable through appropriate housing and management.
Stereotypic behaviour in horses is a strong welfare indicator - these repetitive behaviours emerge as coping responses to frustrated behavioural needs, typically related to insufficient forage time, social isolation, or restricted movement. The common practice of fitting crib-collars or anti-weaving grilles treats the symptom while ignoring the underlying welfare problem, and is increasingly condemned by equine welfare organisations. Prevention through appropriate management - ad libitum forage, turnout, social contact - is both more humane and more effective.