Have you ever wondered what Pet Trainer Shock Collars are used for? If you have, then these are basically e-collars that are used to train dogs. There are lots of dog owners that will not need to use these shock collars because their dogs respond to positive reinforcement training. This type of training is when you reward a dog for good behavior with a treat or affection. Repetition training is also another method commonly used to train puppies. However, there are some instances where both these options will not work, and if you have a stubborn dog on your hands, then a shock collar might be the only way to train them. A shock collar basically delivers electronic shocks to your dog’s neck area whenever they behave badly. The shocks are used as a deterrent and encourage your dog to refrain from their bad behavior.