The science of dog training clearly shows that positive reinforcement achieves better learning outcomes with less stress than punishment-based methods, with significant welfare implications.
The training method chosen for companion dogs has direct welfare implications that extend throughout the dog lifetime. Punishment-based methods — including shock collars, prong collars, choke chains, and physical correction — cause acute pain and fear during application and create chronic anxiety associations with training contexts, owners, and the environments where punishment occurred. Force-free positive reinforcement training achieves equivalent or superior results without these welfare costs. The persistence of punishment-based training is driven by cultural tradition, misinformation, and the marketing of some trainers rather than scientific evidence. Pet owners seeking trainers should verify credentials and insist on explanation of methods before any training begins with their dog.