You can also teach your dog to shake with his other paw if you have been concentrating on one paw up until this point. Tell your dog to shake, when he does click and treat, then say “other paw” and physically lift his opposite paw, so he understands what you are referring to. Say “shake” again, click and reward again, then “other paw” and lift the opposite. It may take a little while, but he will get the hang of it. If you really want to get fancy, you can teach your dog right and left paw. This will really impress your neighbors and friends.