Tail docking prevents injurious tail biting but causes acute pain and may cause chronic discomfort. Addressing the underlying causes of tail biting is the welfare-superior long-term solution.
Tail docking is a welfare trade-off that addresses a symptom (tail biting) rather than the cause (inadequate environments). The acute pain of docking is well-documented; the possibility of chronic neuromatous pain at the wound site is less certain but plausible. The alternative — managing the root causes of tail biting through enrichment provision, appropriate stocking density, and good nutrition — eliminates both the tail biting welfare problem and the docking welfare cost, representing a superior welfare outcome. Evidence from producers successfully raising intact-tailed pigs demonstrates feasibility. The EU requirement to provide a written declaration of exceptional circumstances when docking is performed has been largely ineffective at reducing the practice without enforcement. Consumer pressure, retailer requirements, and certification scheme standards are driving more meaningful change toward intact tail rearing programs.