Training method choice has direct welfare implications for dogs, with positive reinforcement approaches consistently showing better welfare outcomes than punishment-based methods.
The choice of training method is a welfare decision. Punishment-based training including the use of choke chains, prong collars, and shock collars causes pain, fear, and suppresses behaviour rather than teaching alternatives. Dogs trained punitively show higher salivary cortisol, more stress behaviours during training, and worse long-term welfare outcomes. Positive reinforcement builds animals that engage willingly with training because it predicts good things. There is no welfare justification for punishment-based training in companion dogs.