I chose "No" because of how terribly the "dominance theory" has been misunderstood and misconstrued.

Dogs may be very well related to wolves, but they are NOT wolves. They've been domesticated. And I don't think the dominance theory can really apply when you're dealing with mixed species. I'm sure you can apply leadership to a certain degree with pet dogs, but most social animals have a certain 'pecking order' anyways. It's natural for most social animals to choose and follow a leader (even humans). However, I don't believe that there are dogs who are in a constant state of trying to gain dominance. Lack of clear rules and leadership? Sure, but I don't think you have to necessarily "dominate" a dog.

Clear as mud, eh?

ETA: Yeah, my dogs leave the house first. They eat in separate rooms from us so it doesn't matter to them whether the humans or dogs eat first. They don't walk beside/behind me when on leash. They have furniture privileges. BUT, they also wait before their dinner. They have concrete "Gives". They've never growled or bitten me. They allow me to poke/prod them. I can brush their teeth, clean their ears, grind their nails, and I don't get a single peep from them.

So I guess I should say, I believe in a benevolent leader theory (thanks Pat McConnell )