The training method used with dogs has profound welfare implications. Evidence strongly supports positive reinforcement over aversive methods for both welfare and effectiveness.
The training method applied to dogs directly determines their emotional welfare during the learning process. Aversive methods — punishment, corrections, electric shock, choke chains — cause fear, pain, and anxiety. Beyond the immediate welfare cost, aversive training is associated with increased risk of aggression (a dog that learns biting stops punishment learns to bite more readily) and chronic anxiety. Positive reinforcement training, by contrast, creates dogs that actively engage with training as a positive experience, builds trust between dog and owner, and produces reliable behaviours without welfare cost. The evidence base strongly favours positive methods.