I just recently got a 3 month old doberman mix. He is the sweetest dog, the only problem is he is completely afraid of my 8 month old rat terrier mix. Its a little funny to see because at 3 months he is just as big as the terrier, but he is getting run around the house and I don't know if I should do anything. Is there a way I should let them meet, or should I just let them get used to each other on their own? Right now I have them separated, I doubt I will get rid of either dog unless 100% necessary. Does anyone have any advice?