We have a very puppy/dog friendly home. We have a teacup chiweenie, a cathoula, and a miniature chiweenie and then we have Fagan the mini yorkie. All of my dogs get along fine, except Fagan. Every time any other dog gets near me or him he attacks and bites them, even the big cow dog. I don't really know how to react to this behavior because we have never dealt with it before. I got Fagan for Mother's Day and we adopted him from an agency we used for our other dogs. I just don't know what to do... he is the sweetest dog out of all of them but turns so mean so fast. I just don't want any of our babies to get hurt, even him. How do I stop this behavior?
