This command teaches a dog emotional control. By understanding "wait," if the dog wants to chase an animal running across the road, he knows a "wait" command means he can't act on impulse. Get started by holding the dog's collar. Use food, which now becomes a distraction, and move it away, saying, "Wait, wait, wait." Repeating the word draws the dog off the "sit" command, while he focuses on the movement of the food. Later, drop the repetition. Graduate to holding the leash loosely for different lengths of time. If you don't, you'll pattern him to only stay for a certain amount of time. Add distance, time, and distractions until the puppy understands commands.