[Buster Brown]

I think that the easiest way to be sure of a non dominate Yorkie is to rescue and older Yorkie whose personality is a known factor. With any puppy you can determine if they are shy or dominant to a point but I also believe how you train can influence a behavior but not necessarily change a personality. I am an hyper A type I have learned to modify my behavior so that I am not stressed all the time but I will never have a calm sedate demeanor because that is not "my nature" For me with Buster he has full run of the furniture and sleeps in bed with me. He only goes to his crate for time outs or if I am cleaning or doing something like moving heavy items where he can get hurt. It all comes down to their personality and your being consistent with the training.