Tail biting in pigs causes severe wounds and welfare harm and is an indicator of systemic housing problems that routine tail docking fails to address.
Tail biting is a symptom of a system that fails to meet pig behavioral needs — the behavior itself is a welfare indicator, and the wounds it causes represent a secondary welfare harm. Addressing root causes through enrichment, space, ventilation, and nutrition prevents biting and eliminates the need for docking. The evidence base for prevention is strong but industry adoption remains limited.