Tail biting is a serious welfare problem in pigs caused by barren environments and overcrowding — yet it is routinely managed by painful tail docking rather than addressing root causes.
Tail biting represents a systemic failure of pig farming welfare logic: the response to a behavior caused by poor environments is a painful mutilation of healthy tissue rather than improvement of those environments. Tail docking — without analgesia, in the first days of life — causes acute pain and permanent sensory nerve damage. The biting it prevents is itself a product of environments so impoverished that pigs redirect investigative behavior toward each other. The welfare-positive solution is environmental enrichment and adequate space, not prophylactic mutilation. This has been demonstrated clearly in numerous research and farm trials.