I just got the japanese chin/schnauzer puppy. The house already has a rat terrier and sheltie. When we brought the puppy home we did the whole have them meet a nuteral area, but the terrier keeps barking whenever the puppy gets near her, but her hair is not raised on her back. The sheltie just ignores the puppy which is fine. I guess my question is how help the rat terrier except her or will it just happen?