I love to watch The Dog Whisperer. Cesar is more a people psychologist than a dog psychologist, IMHO. He really has a knack for getting to the crux of the matter.
We have adopted dogs over the years, and there’s an excellent book called MINE! about dog training of dogs that tend to have aggressive guarding behaviors, whether it be guarding a place, a person, a bone, or food. I highly recommend it if you find yourself with a dog who “guards” things. Our last “adoptee” was a food guarder, and we found the book extremely helpful.
make_mine_pistachio_please_