[107barney]

Youre lucky you escaped alive! My barney would've had you in the ER. Teaching the drop command will help. Leave it is fun for them because it works on their instinctive hunting instinct (a trainer told me that). Drop is much much harder because in dog language whoever has it in their mouth owns it. You're asking him to give up what is HIS resources. Drop and wait have no impact on each other just as "come" and stay do not. Far easier to teach stay than come. I do think resource guarding like this should be taken as a serious problem and addressed immediately. Ive never cured barney of it completely, but he at least now guards only from the other dogs and my trainer says that's ok.