Pet Information > ASK Experts > Dogs > Dog Breeds > German Shepherds > Aggression

Aggression

19 17:31:23

Question

Ray
Hello, I need help...I lost my female GSD on 12/12/05 to cancer. A week later I bought my male German Sheperd when he was 5 months old. The previous owner had to sell him because her other 2 male GSD's picked on him. He and I bonded immediately and we had absolutely no problems with him for about a year and a half. I had taken him to Schutzhund training, of which he performed wonderfully, but I had to stop partway through due to health issues. About 6 months later he growled at a lady who leaned over him to pet him, which he had never done before. About 4 months later he became very aggressive toward my 22 year old son, barking and growling at him. Since then he has been aggressive with both of my sons, ages 22 and 18. The aggression continued for several months. I took him to a 1on1 training class during which he performed perfectly. The aggression continued, usually 3 to 4 months apart. Then 4 night ago I accidental stepped on his foot and he yelped, I reached down and pet him and all was ok, then I reached over him to get my clothes and he became very aggressive towards me, barking and growling. I held him down on the bed and tried to calm him. I saw in his eyes fear, not anger at this point. I was able to calm him and all was well again. Then tonight he was lying on the bed next to me when my wife came in and wanted to come to bed. She touched his hip told him to get off the bed. This has happened many many times with no problems, however on this night he jumped up and lunged toward her barking and growling aggressively. I pulled him back and after several minutes I calmed him down. I had my wife hand him his toy ( a ball which he loves ) and he took it with no issue. He has been trained and socialized when he was young and I have taken him on many walks, even into buildings and such, up until he started displaying aggression, then I walked him but kept him away from people. Due to an injury I have not walked him or played ball with him in a field in about 4 months. We play many times a day for short durations in the house, where I can throw the ball down the hallway and play tug with him. He is my best friend, I love him dearly. I will not.....will not put him down. I need to find help to control him. I do not want to lose him. Please   please help me.

Steve

Answer
Dogs aren't mature until 3 years old.  As they mature, they often challenge their owner for leadership.  Neuter him if not already.  I would expect in both the Schutzhund training and the private lessons you were taught the importance of good leadership.  The key to most behavior problems is approaching things using the dog's natural instincts. Dogs see all the people and dogs in the household as a pack with each having their own rank in the pack and a top dog. Life is much easier if the 2 legged pack members outrank the 4 legged ones. You can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat. Start at http://www.dogsbestfriend.com/ For more on being top dog, see http://www.dogbreedinfo.com./topdogrules.htm