My gsd needs aggression help badly. I dont know what to do at this point. Little background on him. He is 1.5yrs old Hes has major aggression towards other dogs and people. He will sit in the backyard and bark at the the neighbors all day while doing this his hair will raise down his back. I cant have anybody over without crating him because he will lunge at them while growling and barking with his hair raised down his back. I have no clue what do. I took him to a trainer around my area, she has 30yrs experience with gsd training and she told me it his genetics and she made it seem like there was nothing she could do. So i never went back. I dont know what to do anymore.