Lynzy - Dogs are not wolves, the pack theory was based on a study of captive wolves who were forced into unnatural behaviours because of their circumstance. The same theory has been discredited by exactly the same group of scientists.
Interestingly I have two yorkies (and two Jack Russells) on my sofa right now with no issues. I expect the 'pack mentality crew' would have a little to say about that.
In public response to your PM asking where my information comes from I have a folder full of dog training and behaviour certificates some earned whilst I was a military dog trainer, others when I was training small dogs to be deaf peoples ears both full time respected dog training jobs. In addition to many years of rescue work.
Yet exactly why I have to defend myself against your misguided theories in personal messages
I do not know? So I won't reply and kindly refrain from doing that again! You may live with three yorkies, but you know nothing about me, so be careful who you run around accosting!
Thank you!