I have a 4 yr old terrier mix. She looks exactly like Benji and her name is Missy. I found her a couple of years ago. I want to become a pet foster parent, however Missy passionately hates other dogs. She isn't much of a people person either. I know how to work on the people part but how do I get her not to attack or hate other dogs? I want her to be friendly and accepting of any dog I bring into my home.