Tail docking of piglets is routinely performed to prevent tail biting in barren environments. Understanding this practice reveals how welfare problems are addressed symptomatically rather than systemically.
Tail docking is a paradigm case of addressing welfare symptoms rather than causes. Tail biting is a behavioral response to an environment that fails to meet pigs' behavioral needs - crowding, boredom, and frustration redirect natural exploratory behavior into harmful oral fixation on pen-mates. The industry's solution has been to amputate the tails rather than address the environment that causes the biting. This represents a welfare failure at two levels: the docking procedure itself causes acute pain in neonatal piglets, and the barren environments that necessitate it cause chronic welfare deficits throughout the animals' lives. The evidence that enriched environments eliminate tail biting without docking makes the continued practice of routine docking difficult to justify on welfare grounds.