I'd maybe try using the Bark Genie to interfere w/ the bad behavior, it works wonders for certain dogs. Cheap on Amazon.
What he's doing is called Resource Guarding...google this and you'll find lots of material.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~
°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |