We have a little problem with our 10 months old German Shepherd. He is neutered, attended puppy school, 2 weeks boarding school and now he is currently in obedience classes. He is very good in class and on the leash and he listens most of the times. He has a problems with other dogs, he doesn't like them to get too close to him or sniff him. He is fine with our 2 other dogs and our cat, but he just doens't like other dogs. That is not the only problem. When he is in the backyard and the neighbour dog is out too (she is a pretty aggressive and loud dog) starts barking and growling at the fence and he would just ignore you until you go outside and physically remove him from there, sometimes he gets too caught up in the moment it is really hard to pull him away. He usually comes when called, but not when he sees that dog! He is not like that outside when he meets other dogs, he just looks at them, growls a little but after we correct him he is fine. Also he keeps playing, sometimes hard, with our older dog Marvin, he is 11 and he is a scottish terrier/poodle mix. He doesnt' do that wiht our other dog, a 6 year old Bichon Frise, he seems to respect him as he always puts him back in his place every time he bothers him. He keeps trying to play with Marvin, trying to put toys in his mouth or stealing his cookies or bones. Sometimes he tries to bite his tail or his neck, trying to carry him around. He doesn't look like he is is hurting him, but he is such a big dog compared to Marvin and I am afraid he will actually hurt him. Plus whne he is playing with him and he is without his collar he wont listen, you have to put his collar on and the leash and after that he will listen to the commands. We do the Alpha training with him and we don't allow him on couches, bed and he sleeps in a crate. The 2 other dogs are allowed on the couch, are fed before him and are greeted before him too. He is a good dog, listens and well trained, but he just has that problem. What are we doing wrong? Maybe he is still too young and wants to play? Any suggestions?
Thank you for your help