Newfsie, I was so enjoying your description of your little dog insisting she has the right to claim more than her share of treats.
What I had found, tho', was that my little dominant didn't fight her battles, many times. She did let bigger dogs step in to do the defending. She's bossy, she was Entitled, (according to her), but she was far from silly. Similarly, my dogs made a lot of noise if a person approached. I would tell them quiet and they would settle. If I answered the door, my dogs would mind their own business, but if my voice changed, I knew that my cattledog bitch would be on her feet and hackled and going off, enough to put off anyone. I could quieten her easily, but she was great for unwanted religious, etc callers. I can only liken the role she took, as enforcer. At no point did she ever challenge me. She was deference personified but she could pick from my tone, (I don't mean yelling), just the difference between the welcome tone of pleasured surprise, an initial high to low to high greeting and a more curt, "Yes?" She didn't expect me to roll up my sleeves and clench my fists, she literally sprang to alert defence at the tone of my voice. If I told her to stop, she did but if I didn't, she would keep up the threats, and I could apologise and say, "Sorry... I have a very scary couple of dogs..." I was often thankful I could rely on her, when a dubious strange man or men turned up. She came across as truly frightening but was gentle and deferrent to me and I could bring in baby birds, anything, and she was told gentle and was excruciatingly so. I knew if I raised my voice or screamed, she would go from all noise and teeth, to attack. I definitely led this group but at no time did I have to fight for it.
I don't see it as wolf pack, tooth and claw dominance. It's family, it's personal relationships, between and amongst species. I do believe we have a special relationship with dogs, though, and I do believe any dog that seems to be able to dominate people, by snapping, physical size, etc., is always truly miserable. They don't want it and I think they feel insecure and stressed. It is more about wanting more - food, attention, toys and in some dogs, not seeing why they should share - but often the squabbles are only about sharing with the family member that is most irritating. They are the squabbles. Often not I WON'T SHARE but I'M NOT SHARING WITH HER.