Renowned life coach Tamar Geller is the leader of the pack when it comes to a playful approach to teaching your dog good manners. Forget the choke chains and prong collars and embrace Geller's nonaggressive tactics. Effective both for puppies and older dogs, the program is built on Geller's observations of wolves in their natural habitat and includes a host of fun and easy-to-learn games that both dog and master will love.