No help to offer, but I really have the opposite problem.
My avatar is my son's "rottenweiler". She lives with us right now because he is deployed. She was raised with a pug mix, a poodle (?), a Shitzu mix, and a chow mix, all smaller than her, and all rescued/adopted from the humane society.
She has little dog syndrome because she does not realize that at 103 lbs and over 3 feet tall, she is a BIG dog. Quite a spectacle when she wants to be my lap dog!
Good Luck,
Susan