Suzie's breed?

"I need your advice I was given Suzie when she was 6 months old (former owners were moveing and did not / could not take her with) So I was blessed. I was told she was an American Bulldog. She is only 30lbs and fully grown, way to small to be an Am. bulldog but way to big to be a boston terrier. After seeing some of your pictures I must wonder though she does very similiar poses and acts identical to the dogs in your pictures. Please help me with your opinion of her breed. Any info you can give me would be a great help. It doesn't matter in my heart as to what breed she is, but in my mind I would love to know." I think maybe Suzie is a small pit bull. Maybe she is Boston pit mix, but I'm not very good at determining the breed of mixed dogs with square heads and noses. Hopefully someone out there is better at determining breed than me.