Stereotypic behaviors in horses — including cribbing, weaving, and box walking — develop from environmental deprivation and once established are largely irreversible, making prevention through early management critical.
Stereotypy prevention is among the highest-value welfare interventions in equine management because stereotypies, once established, are essentially permanent features of the affected horse's life. A horse that develops cribbing from early dietary management that allows gastric ulceration will crib for the rest of its life — even if management improves dramatically. The window for prevention is the period before establishment, particularly the first 18 months of life, when management decisions about forage access, social housing, and exercise opportunity determine whether the conditions for stereotypy development are present. Ad libitum forage access from birth, social housing that allows conspecific contact, and turnout that enables free movement are the management practices that most reliably prevent stereotypy development. The welfare cost of devices that prevent stereotypy expression without addressing causes — including anti-cribbing collars — is well documented in increased stress indicators and should be avoided.