A training collar is a device used to assist in the training of dogs. It typically fits around the dog's neck and can deliver various types of stimuli, such as sound, vibration, or mild electric shock, to encourage desired behaviors or discourage unwanted ones. These collars are often used in obedience training and can help reinforce commands like sit, stay, and come. There are different types of training collars, including bark collars, remote training collars, and vibration collars. Each type serves a specific purpose and can be adjusted to suit the dog's temperament and training needs. Proper use of a training collar can enhance communication between the dog and owner, leading to a better understanding of commands.