Dog Training Methods and Welfare: The Evidence Base

The training methods used with dogs have direct welfare implications — aversive techniques cause stress and fear while positive reinforcement achieves equivalent or better outcomes.

Key Facts

A 2021 meta-analysis in Frontiers in Veterinary Science found aversive training methods increased stress behaviours, aggression and fear compared to positive reinforcement
Dogs trained with shock collars, choke chains and prong collars show elevated cortisol, increased aggression and reduced ability to learn new tasks
Positive reinforcement training using food rewards, play and praise achieves obedience outcomes equivalent to aversive methods without welfare costs
The LIMA principle (Least Intrusive, Minimally Aversive) is the gold standard recommended by the American Veterinary Society of Animal Behavior
Shock collar use is associated with increased anxiety in dogs even outside training contexts — the stress generalises beyond the training environment
Several European countries including Wales, Austria and Denmark have banned the use of electronic shock collars entirely

Welfare Considerations

How we train dogs is a welfare choice. The evidence is now sufficient to state clearly: aversive training causes suffering, generalises beyond the training context to increase chronic anxiety, and provides no benefit over positive reinforcement methods in terms of training outcomes. The persistence of aversive methods reflects tradition, commercial interests and misconceptions about dominance and pack structure that are not supported by current ethological science. The welfare case for positive reinforcement is not just about kindness — it is about evidence-based practice that produces better-trained, better-adjusted dogs with lower stress profiles. Supporting policy that restricts aversive devices and promoting positive training education are both achievable welfare improvements.

What You Can Do

Choose trainers and behaviourists certified by organisations requiring positive reinforcement methodology as their standard
Never use shock collars, prong collars or choke chains on your dog — safe and effective alternatives exist for all training goals
Advocate for shock collar bans in your country or region — many European countries have already done so
Report trainers using aversive methods to professional regulatory bodies where these exist
Share the evidence base for positive reinforcement training to shift the culture of dog training toward welfare-conscious methods