Tail docking of piglets is a painful routine procedure used to prevent tail-biting, but evidence supports addressing root causes instead.
Tail docking without anesthesia causes acute pain and may result in chronic pain from neuroma formation at the amputation site. The practice treats a symptom rather than its cause - it does not improve the welfare of pigs in barren environments, it merely prevents one specific injury at the cost of another. Addressing underlying causes through enrichment is both more effective and more ethical.