Routine tail docking of piglets is performed to reduce tail biting but causes acute pain and denies pigs a functional body part. Evidence-based alternatives address the root causes of tail biting without inflicting preventive mutilation.
Tail docking represents a welfare failure at the system level: it is performed to manage a symptom (tail biting) caused by inadequate management rather than addressing the root cause. The welfare logic is circular — poor management causes tail biting, tail biting would cause severe pain, so we inflict pain prophylactically to prevent pain. The evidence base for managing tail biting through enrichment, reduced stocking density, and management improvement is sufficient to achieve comparable outcomes without routine docking. Countries and farms that have eliminated routine docking demonstrate that it is not a welfare necessity but a management convenience that comes at the cost of individual pig welfare.