Routine tail docking of piglets is practiced to prevent tail biting injuries, but welfare science shows it addresses symptoms rather than the underlying husbandry failures that cause biting.
Tail docking is a welfare intervention that treats a symptom of poor housing while leaving its cause unaddressed. Tail biting is driven by frustration, boredom, and redirected exploratory behaviour in environments that do not meet pigs' behavioural needs. Docking removes the available target rather than addressing the motivation. The procedure causes acute pain and may cause chronic pain through neuroma formation at the wound site. EU legislation that prohibits routine docking but permits it as a last resort has been widely interpreted as a justification for continued routine practice in systems that have not invested in the enrichment provision that would eliminate the need for docking. The welfare-consistent approach addresses the housing and management factors driving tail biting through enrichment, lower stocking density, adequate nutrition, and appropriate environments — making docking genuinely unnecessary rather than merely managing its consequences.