Use a clicker, or a word (such as “Yes”) to mark the exact moment your dog gives you the correct response. Begin by pairing the marker (“YES”) with the food reward. Just say, “Yes” and give the dog a treat. Once your dog understands that “YES” means he is getting a yummy treat, you can start training. When your dog gives you the desired behavior, just “YES” and treat! The Marker is a promise of reward, so ALWAYS give a treat when you use your Marker.