Most people incorrectly use the terms dominant and dominance with regard to dogs. Here is a good blog post by Dr. Sophia Yin on the topic.
http://drsophiayin.com/blog/entry/dominance_in_dogs_is_not_a_personality_trait
Of course you and your beautiful baby are welcome no snobbs here. And I do agree there's a B in there. Your baby is really sweet looking, enjoy. I also have a rescue and believe me they give back a thousand times more then what you give them.