Routine tail docking of piglets — cutting off most of the tail — is practiced to prevent tail biting but causes acute pain and raises fundamental questions about addressing symptoms vs. root causes.
Tail docking illustrates how addressing the symptom rather than the cause of a welfare problem can entrench practices that cause ongoing harm. Tail biting is a behavioral welfare indicator — a sign that the production environment is not meeting pigs behavioral needs. Tail docking prevents the worst consequence of tail biting (severe infection), but it does so by causing certain harm (the docking procedure and post-operative pain) rather than by addressing the environmental deficiencies that drive the behavior. The Nordic countries have demonstrated that maintaining undocked pigs is feasible in well-managed, enriched systems. The widespread continuation of routine docking across EU pig production reflects unwillingness to invest in the environmental improvements that would make docking unnecessary — a choice that the EU regulatory framework nominally prohibits but in practice permits through weak enforcement.