Dog training devices are tools designed to assist in teaching dogs specific behaviors or commands. Common types include clickers, which provide a sound to mark desired actions, and shock collars, which deliver a mild electric stimulation as a correction. Other devices include treat dispensers that reward good behavior and leash training tools that help manage pulling during walks. These devices can enhance the training process by providing clear communication between the dog and the owner. When used correctly, they can promote positive reinforcement and help establish a strong bond. It's essential to choose the right device based on the dog's temperament and training needs.