The training methods used with dogs have profound welfare implications. Research consistently shows that reward-based methods produce better welfare outcomes than punishment-based approaches.
Aversive training methods cause acute pain or fear and create lasting associations between the training context and negative emotional states. Dogs trained with punishment may comply but live in a state of chronic anxiety about when punishment will occur next. The relationship between dog and owner trained aversively is built on fear avoidance rather than trust. Beyond the immediate welfare cost, aversive methods increase aggression and anxiety long-term — making them counterproductive as well as harmful. Reward-based methods build trust, positive emotional associations, and willing engagement.