One other word on Leave It / Drop It - start out with something she isn't going to defend with her life. I think people have already told you to try feeding a little bit at a time so she is looking to you (or whoever is feeding her) to give her more, not guarding what she already has.
Personally, I would not give any chews that she snarls over right now. I would try to find things she enjoys, but is less passionate about. Work your way back to things she holds most dear.
__________________ If you love something, set it free. Unless it's an angry tiger. |