Scientific evidence strongly supports positive reinforcement-based dog training over aversive methods. The choice of training method has significant welfare implications for dogs.
The welfare implications of dog training methods are now well-supported by scientific literature. Dogs trained using punishment, fear, and pain show elevated cortisol, more anxiety-related behaviors, more owner-directed aggression, and reduced behavioral reliability compared to dogs trained through positive reinforcement and reward. The argument that aversive training is necessary for reliable results in difficult dogs or working roles has been largely refuted — police, military, and service dog organizations that have switched to positive methods report equivalent or better performance outcomes. The practical welfare implication: owners choosing trainers who use choke chains, shock collars, alpha rolls, or intimidation techniques are choosing methods that cause unnecessary suffering. Certifications from organizations such as the International Association of Animal Behavior Consultants (IAABC) and the Certification Council for Professional Dog Trainers (CCPDT) indicate commitment to evidence-based, humane methods.