How do I make a dog mean? Not that I want that but would kind of like for him to also be our protector much as his. I don't want to hit him or deprive him though he is just sometimes tooo nice.

Ok maybe I should put it diffrently. I don't mean like an attack dog. More like a security dog and not have him picked on by bigger dogs he can stand up for himself. The only training school we have is loaning him out to the local sheriff which they don;t gurantee his safety.