Tail docking of dairy cattle remains practiced in some regions despite strong scientific evidence of welfare harms and no demonstrated benefit to animal health.
Tail docking causes acute pain during the procedure and chronic pain as the stump heals and forms a neuroma. The procedure serves no proven veterinary purpose while removing the cow's primary fly-swatting mechanism, increasing fly harassment welfare impacts. Cows use their tails for communication and social signalling, and docking impairs these behaviours. The persistence of this practice in some jurisdictions despite the scientific consensus represents a preventable welfare harm.