I have 2 german Shepard a 3 yr old male and 8 mo. old female. Respect and love the breed, they are my babies and they love me. I am not a breeder but do have a question. If an AKC male GSD was neglected and feared by his 1st owners shows mistrust and aggression to visitors of his new living home can this be passed on if he was used for stud? BTW my question is not about my fur babies but rather a friend's that I've met a few times.