Routine tail docking of piglets is widespread in intensive pig farming despite EU legal requirements to make it a last resort, with tail biting remaining a persistent welfare problem.
Tail docking is performed to prevent tail biting, but the logic is circular: docking treats a symptom of inadequate husbandry rather than addressing the root cause. Tail biting is driven by crowding, boredom, redirected rooting behavior, and social stress — all features of intensive confinement systems. Where husbandry addresses these underlying causes through enrichment, appropriate stocking density, and stable social groups, tail biting rates fall substantially even in undocked pigs. The evidence from Denmark and Finland demonstrates that intensive pig farming without routine docking is achievable. The barrier is industrial inertia rather than biological necessity.