When your dog sees or approaches another dog, you want him to behave in a calm, friendly, confident manner. It is natural for him to be interested in the other dog, but not to rush into the other dog’s space, or vocalize excessively, which another dog may perceive as threatening, and can result in aggression. Teaching your dog to be calm around other dogs and making meeting other dogs a pleasant experience may take some time and insight on your part, to address the underlying causes for your dog's excitement. Many dogs who get overexcited are actually anxious, and addressing anxiety issues may need to be part of training your dog to be calm. You will need to find other dogs to help teach your dog to be calm when in the presence of another dog. Find a mature, calm, well-balanced dog to help. Have treats available to provide positive reinforcement for calm behaviors. During training, avoid letting your dog have access to other dogs when not in a training session, so that exited behavior does not occur, and is not reinforced. Provide lots of high quality treats in small amounts to distract your dog and keep him focused on the get it game and not the other dog. Gradually move the “get it” game closer to the other dog, providing treats to distract your dog, and providing an alternate behavior, so he does not get excited by the other dog, but remains focused on his “get it” treat game.