Resource guarding in dogs is a normal canine behaviour that requires skilled management rather than punishment, with inappropriate responses causing fear, aggression and welfare harm.
Resource guarding welfare involves both the guarding dog and household members at risk of injury. Dogs that guard and are then punished experience fear and defensiveness that escalates the behaviour - punishment creates the welfare failure of fear-based aggression while making the practical problem worse. Dogs that guard without management may eventually bite - creating a welfare crisis where the dog may need rehoming or euthanasia. Evidence-based management through positive trading, predictable feeding routines and avoidance of confrontation maintains both dog welfare and human safety. The key welfare insight is that guarding is communication, not dominance - a dog showing guarding behaviour is communicating an emotional state that deserves respect, not punishment.