My male neutered GSD really shocked me when the rescue people came over to give me some paperwork. They had not known the dog personally as he was in a foster home and his mom, who loved him but had some life situations could not take care of him with 2 jobs. My dog, only with us a week and is just wonderful with bonding with us, growled and barked up a storm, continuously, not minding our commands, we he just came to our home a week ago. He proceeded to snarl with his mouth foaming a little in the corners with his head right by one rescuers face! My heart sank because the rescue ad said, Good with people, dogs and graduated obedience school. I have had 4 shepherds so far and this was not moderate aggression. we believe it is fear based as he was with this woman for 7 months and no visitors. He did got to Doggy Camp and did well with the counselors that he knew but he seems very protective of me or he may be terrified. I put him in his crate and he continued to snarl and bark, never got quiet. It was very upsetting to me as I already am deeply in love with this character. He is super, extremely active, and at 11 months chews up everything like pillows, plastic, wicker, etc. He is crated when I leave the house which is rarely. He wants to play ball all the time and I spend about 2.5 hrs a day chucking balls but he won;t come in after that and pitches a fit, whining, barking etc. We are well aware he needs exercise a lot, takes walks plays, had interactive puzzle toys and I try to do basic training again,His recall doesn't work when he is adamant about something. A few trainers suggested he see a vet for some Prozac or something as he is really over the top. Some trainers I talked to said he might do better where he has a job like K-9 police training but I do not want to ever give him up. His foster mom got him a 3 months at a shelter where someone dropped of a basket of GSD puppies. SO he has been there, at her place, and now I am his mom. I read that GSDs , of course bond strongly with their owners and the more they are sent to new homes they get traumatized and get behavioral issues. She had put him in a train and stay boarding place where they found out the trainer was fake and the dog came out looking emaciated. He was most likely abused. I want to love him and give him the best home but I cannot have people over at all unless I board him. I was referred by several to a trainer who is also a well sought out behaviorist, very expesnsive but it would be home visits to stop the door behavior with guests. It is also from a facility that will board my dog and work with each dog as individuals and see what they like to do and socialize them slowly with people and other dogs. I never expected this but the owner did not reveal all to the rescue. Any other suggestions or similar stories that came out well in the end?