Modern trainers use clickers to train their dogs because it aids in the animals understanding of what is rewardable. The animal quickly learns that when it offers the behavior again, it will be rewarded. This positive reinforcement approach will often cause an immediate “wow” moment for both handler and animal.
The clicker is a small hand-held gadget that emits a sound when you press it. The sound the clicker makes is a signal to your dog that the behavior it just offered is rewardable. This “click” is always followed by a food reward. Think: Click and Treat! Note, the clicker is NOT for getting attention.