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. 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 treats for get it command and move reward, start dropping treats beside you, and then behind you, and giving the “Get it” command, so your dog learns to look for, and get his treats behind you. Introduce another dog and have an assistant with a calm dog approach you, when you see the other dog from a distance, provide the “get it” command and give treats, your dog should move behind you to get his treats, this distracts him from the other dog, teaches him a different behavior rather than getting excited.