Resource guarding — defensive behaviour around food, toys, resting places, or people — is a normal canine behaviour that becomes a welfare and safety problem when it escalates to aggression. Understanding and managing it protects both dogs and humans.
Resource guarding causes chronic stress for dogs who anticipate resource competition. Dogs that have learned to guard through experience of deprivation or competition are in a constant low-level state of defensive vigilance around valued items. Punishment exacerbates this by adding threat association to the resource context. The welfare approach involves reducing resource competition through predictable abundance, teaching voluntary surrender through trade games, and never punishing warning signals that are communicating discomfort. Households with children present particular risks because children's unpredictable approaches trigger guarding responses, making professional assessment and management planning essential for dogs with known guarding histories.