Clicker training is a form of positive reinforcement training that uses a clicker to mark desirable behavior. The clicker is a small, handheld device that makes a distinct sound when pressed. Clicker training is based on the principle of operant conditioning, where the dog learns that the sound of the clicker is associated with a reward. To use clicker training, you first need to associate the sound of the clicker with a reward, such as a treat. Then, you can use the clicker to mark good behavior, such as sitting or staying. When the dog hears the click, they know that they have done something right and will be rewarded.