16. Shock Collars
Shock collars, sometimes called electronic collars, are designed to correct unwanted behavior through an electric stimulus. However, many veterinarians and animal behaviorists warn that these devices can inflict pain, stress, and long-term behavioral problems. They may even damage the trust between you and your pet. Several countries have already banned shock collars due to welfare concerns. Positive reinforcement training methods are far safer and more effective. For expert guidance, see the American Veterinary Society of Animal Behavior.