Electronic shock collars cause measurable welfare harms in dogs and have been banned in multiple jurisdictions, yet remain widely used in others despite the evidence against them.
The welfare evidence against shock collar use in pet dog training is consistent and clear. Even proponents who claim to use them at low intensities acknowledge they work through aversion — the dog stops behavior to avoid an unpleasant stimulus. The misuse potential in inexperienced hands, the documented increases in fear and aggression, and the availability of effective positive reinforcement alternatives combine to make a compelling case for restricting or banning shock collar use. The training community debate framing this as a preference issue rather than a welfare issue understates the evidence.