Pig Tail Biting: Causes and Prevention

Tail biting is a serious welfare issue in commercial pig production causing injury, pain, and secondary infection, and reflects deeper systemic welfare problems.

Key Facts

Tail biting is motivated by frustrated rooting, exploratory, and social behaviours in barren environments
Once initiated, tail biting spreads rapidly through a group — even small wounds attract further biting
Secondary infections from bite wounds can result in spinal abscesses, septicaemia, and death
Routine tail docking is used as a mitigation measure but does not address the underlying behavioural causes
Enrichment, stocking density reduction, and improved nutrition significantly reduce tail biting incidence

Welfare Considerations

Tail biting represents a breakdown in the welfare system. The behaviour occurs because pigs lack adequate outlet for their complex behavioural repertoire. Addressing tail biting solely through docking — removing part of the tail — treats the symptom while leaving the underlying problem untouched. High-welfare producers focus on root cause reduction through enriched housing, appropriate stocking density, and good stockmanship.

What You Can Do

Choose pork certified to standards that prohibit routine tail docking and require enrichment provision
Support research and advocacy for improved housing standards that address tail biting at source
Ask pork producers about their tail biting incidence rates and management strategies
Advocate for legislation requiring farms to demonstrate low tail biting rates as a condition of approval for docking