I really wish there was a dog trainer here in Salmon Idaho I try to take walking routes where Finn is not exposed to dogs .However there are several dogs in the apartment complex that are a;;owed to run free including the managers daughter: Yesterday they were out when I tried to walk Finn and as usual he went crazy as the dogs approached him. I do have a taser which makes a loud bang and that stopped them so I could move on. Last night I had a friend who has a female collie and she invited Finn and me to the dog park, She told me no other dogs were there. I went and she had her collie and another little male dog that she walks. As soon as I opened the door and let Finn out he attacked the little male dog. Thus a fight and I used my taser to break them up. The little dog ran home and then Finn was fine with the female. I love walking with Finn but I am frustrated and don't know what to do ,Would a shock collar be useful