Tail docking - removing part or all of the tail - is practiced in pigs, dairy cattle, and some sheep, causing pain and welfare harm that reflects underlying management failures.
Tail docking is a painful procedure performed to address problems caused by intensive farming conditions rather than to benefit the animals themselves. Pig tail biting is overwhelmingly caused by boredom, overcrowding, and lack of enrichment - not by pigs' inherent nature. The welfare solution that addresses root causes (enrichment, reduced density) is both welfare-superior and often financially viable, yet docking remains routine because it treats the symptom rather than the cause. Banning docking without addressing underlying causes merely transfers welfare harm from bite injuries back to the frustration of severely restricted behavioral needs.