Livestock

Tail Biting Prevention in Pigs: Science and Practice

Evidence-based guide to preventing tail biting in pigs -- the most visible welfare failure in intensive pig production.

Key Facts

Tail biting is a redirected oral behaviour in pigs caused by frustration of natural rooting and exploring needs
It causes significant pain and injury -- both to bitten pigs and to the ears and tails of other animals
Once started, tail biting can escalate to cannibalism and cause severe welfare harm and death
Tail docking is widely practiced to reduce injury risk -- but does not address the underlying cause
The EU banned routine tail docking without prior enrichment provision -- but compliance is highly variable
Risk factors include high stocking density, barren environments, nutritional deficiencies, and disease
The single most effective prevention is provision of deep substrate or rooting material
Early recognition of tail lesions and prompt removal of biters and bitten pigs limits escalation

Welfare Significance

Tail biting is the clearest signal that pig production is failing to meet animal needs. It does not occur in enriched, low-density environments with access to rooting substrate. Prevention requires addressing causes rather than masking symptoms through tail docking. Systems that provide meaningful environmental enrichment eliminate tail biting as a welfare problem.

What You Can Do

Provide deep rooting substrate as the primary prevention measure -- not point-source enrichment
Monitor pigs daily for early tail lesions and act immediately when first identified
Separate biters and bitten animals promptly to prevent escalation
Advocate for legislation requiring meaningful enrichment that prevents tail biting rather than permitting docking