Mine! A Guide to Resource Guarding in Dogs by Jean Donaldson. If your dog is showing signs of resource guarding or possession aggression, this is the book for you. If you can catch it early before it becomes a serious issue, you might be able to address it yourself. However, if you are having a serious problem, please consult with a professional trainer and do not try to handle this on your own.
Mine! A Guide to Resource Guarding in Dogs by Jean Donaldson