A detailed look at the multi-factorial causes of tail biting in pigs and evidence-based strategies for prevention in commercial and welfare-focused systems.
Tail biting is a serious welfare indicator reflecting unmet behavioral needs, particularly the pig instinct to root and manipulate objects. When pigs cannot express this drive on appropriate materials, they redirect it toward pen-mates. Prevention requires addressing multiple risk factors simultaneously: providing sufficient manipulable material such as straw, chains, or wood blocks; reducing stocking density; ensuring adequate feed trough space; maintaining good air quality; and identifying and removing ill or injured pigs promptly. Intact tails require these interventions to be effective — when done well, tail docking becomes unnecessary. Farms that have eliminated tail biting without docking demonstrate that whole-farm management approaches work.