My shepherd doesn't listen when around other dogs?
I have a 15 month old shepherd and he is way to friendly with other dogs. If we go to the park and play with other dogs he doesn't listen will not come back for food and is way to interested in the other dogs. Does anyone have any ideas or tips to help. He will not even worry if we walk off and leave him which makes it hard to trust him off lead... He isn't desexed would this have anything to do with it??