Recently a older, deaf dog avoided being hit by a car because of a hand signal from his owner. If your dog is already a good learner, a few hand signals may be both fun and valuable to learn. DDEAF Training Hand Signs: Some people use ASL (American Sign Language, just as they would for a deaf person. This can be an advantage because anyone who knows ASL will be able to talk to your dog. Some people use modified ASL, so that they can hold a leash in one hand and talk to the dog with the other. Some people make up all their signs (you will probably still want an ASL dictionary, as it can be a challenge to invent signs with nothing to go on). Most people end up using a combination (i.e. obedience signs, and then one handed ASL). Anything you choose is "right" for you and your dog.