Tail biting is one of the most significant welfare problems in pig production, driven by barren environments and overcrowding; prevention through enrichment is more effective than the widespread practice of tail docking.
Tail biting causes pain, infection, and stress to both the bitten and biting pig. Tail docking - cutting off the tail to provide less tissue to bite - treats the symptom while leaving the root cause (environmental deprivation) unaddressed. The welfare-positive approach is environmental enrichment that meets pigs' behavioral needs, eliminating the frustration that drives biting behavior in the first place.