I just thought of something else. I've always worked with them when they are puppies, so that I or anyone else could get right in their face with food or treats present or with their toys. I am brave!lol I've always done this because I didn't ever want them to bite. I would take their food and give it back. I would take their treats and give them back. Did the same thing with their toys. They always knew I wasn't taking it away for good and I would give it right back. I would get right up to their mouths and even kiss them on top of their noses when they would have treats or toys. I just kept working with them until they didn't feel threatened by my doing this.