Very interesting thoughts indeed.
I have no doubt that dogs have a hierarchy of sorts when it comes to conspecific interactions (dog-dog) - who live together (and I'll touch more on this point later). You can see it in all interactions between dogs that live together. However, I do think that it's also not what a lot of the "alpha/dominance/wolf pack" theorists believe it to be either, and of course I believe it HIGHLY varies from breed to breed, based on what they were bred for. There is one girl in our family who such theorists would dub the "alpha" bitch. However I don't see it this way. I consider the fact that she has raised (either directly as her own offspring, or being "grandma" to the other offspring) just about EVERY other dog in the household (except the Shih Tzu mix), so they have all grown to show her the type of respect children would show their grown parents (well, children who were raised well, in an appropriate manner, that is). However, she does not exert her "dominance" like such theorists would describe. She doesn't care if another dog takes the best sleeping spot. She doesn't care if she eats first, or second, or 8th. Most of what she does does NOT at all fall into the "typical" category of "alpha bitch" that many such theorists would claim her to be. She had taken in and raised and taught just about every puppy we've had in our home, with the same guidance and the same mannerisms. She taught them what to do, what not to do (in dog skills). She will intervene in play situations when an older dog is playing a bit too roughly with a young pup (usually the dog playing roughly is the next youngest dog who isn't used to living with small babes). To an experience observer, she seems to fulfill not an "alpha" role at all, but rather the role of simply being the second-oldest dog in the home, who the other dogs respect because they grew up under her and taught by her.
Then there is the Shih Tzu mix, who really blurs up the picture. Our Shih Tzu mix, in "human" terms, believes she is above the Schnauzers...lol. They coexist quite well, but she doesn't play with them, and they don't play with her. They more simply live together, sharing the same space. Of course they interact with each other, and they communicate with each other in bucketfulls, but it doesn't at all follow the typical "pack" mentality that many claim exists between the dogs.
It would be far fetched for any person to try and claim which dog, our oldest Schnauzer bitch, or the Shih Tzu mix (who is the oldest of ALL of the dogs), is "alpha" of the dogs. Because their relationships and interactions just don't fit that perfect little bubble. Yet they all share a home together, sleep together (usually the mix on or beside a lap, but in the same vicinity and usually beside other dogs), they eat together, etc.
You then have to look at the different groups of dogs. The dogs that were bred to hunt in large groups (hounds - beagles, for one example) or dogs that were bred to live together in large groups, tend to have very little expression of dominance/pack behaviours in the group. You could have a group of 60 beagles and there would often be no "obvious" leader, aside from perhaps the "oldest" dog of the group, or the favorite of the owner.
Dogs also live in a very un-natural environment, according to your "typical" idea of pack theory. Most dogs are exposed to other dogs EVERY day of their lives. In the dog park your dog is likely to meet different dogs every day. At the beach, your dog is likely to interact with dozens of dogs it's never yet met. At dogs shows, and trials, the same thing. Yet, all hell does not break loose every time dogs meet each other! There is no big "vying for position" that goes on every time a dog meets another dog! If there was, life would be chaos! If the "pack theory" truly stood as such, and dogs always were out to see "where they fit into the pack and see who's on top", do you think dogs would be able to meet, interact with, and play with completely strange dogs on a daily basis, for their entire lives, with little problems? Sure, they sniff butts, and ears, but is that really any different from a good hand shake when you meet a new person? If the dog is well-exposed to other dogs, they are usually going to do their introduction and then head off to play, regardless of where they are "viewed" as humans as ranking in a 'pack'. Our domestic dog lives a HUGELY different life than both wolves, wild dogs, and feral dogs, in that they are exposed in very different ways to dogs on a daily basis. And I think this totally un-natural exposure, and selective breeding for traits that allow (or prevent) this, change the rules entirely regarding the hierarchical interactions between dogs. When I go to the dog park, or the beach, or a dog show, or puppy classes, or anywhere else where strange, friendly dogs interact, it's just hard to believe that there is a lot of basis to this "pack structure".
While at home your dogs may very well appear to fit into some sort of "order" (or they may not appear to fit any hierarchical order of any kind!), you have to sit back and think - why is this? Is it just "pack structure" as would be shown to you? Or, perhaps, is it like, with anything else, they learn to live together, much like 6 or 7 university students learn to share a rented house together and cohabitate? And they learn what makes each other tick, and yes, they have their disagreements, and sometimes, they might just not get along (after all, do YOU like everybody you've ever met?). But then you look at these same dogs going out in public and playing with dogs on the street, playing with strange dogs in the dog park, going to a new daycare and fitting in perfectly, etc, and it really doesn't seem to stand up all that well when put to the test.
I do believe that, when it comes to dogs living together, there are certain patterns that develop in dogs, and specific relationships that do occur amongst them that some would dub a "hierarchy". But of course this hierarchal concept breaks down quickly when the dogs go out into the real world and relate to other dogs not in their household. So it really leads you to ask - is there truly a "pack" structure going on in your home, or perhaps is it simply that dogs have learned to live together as a familial unit, they learn to get along, they learn what they can't and can get away with - relative to each interaction with each individual dog (Dog A can get away with ___ (what some would call "dominance", and I have no issue with using it in the specific, fluid, context in which it's meant to occur) with Dog B, but can't get away with it with Dog C, however Dog B can get away with it over Dog C....etc), on a dog-dog basis, rather than simply a generalized pack structure? We have selectively bred dogs to do so, so so many things AGAINST what pack theorists would call the "pack structure", that I even question the linearity of interactions between dogs, not just humans.
As for the human aspect, I think that ALL of the dogs view ALL of the humans that they meet to be a completely separate entity than dogs. Of course they don't think that we are dogs. It is said (and research has shown) that dogs, more than almost any other species, including primates, respond most closely to human gestures and facial expressions. Dogs and humans have been together for so many hundreds of years, we have selectively bred very specific traits into dogs that allow us to have very intimate relations with them in very complex ways. I have not yet met a dog that ever tried to show a "place" or "rank" in a human construct (although many pack theorists will claim that they have, so who's to say who's right and who's wrong, eh?). I've met pushy dogs, and dogs with not much guidance, and dogs with not much patience, and dogs who have been basically taught to BE the way they are (in a bad way), but I can't say I've ever seen, as the literature tries to explain, a dog try to be "dominant" over a human. Of course, just like with others, dogs do likely learn that they "can" be demanding and get away with it with some people, that some people ARE pushovers, and that they can be walked all over. But is this truly "dominance", or is it any different from the push-overs that you and I know that you could walk all over and they'd still try to be your friend (not that I recommend this, nor have I taken advantage of such people like that....I truly feel bad for those kinds of people)? And that, once they stand up for themselves (ie, take over "leadership" status in some ideologies), the dog then learns that the rules change, the game changes, and perhaps what they were doing isn't going to work anymore, and then a balanced relationship forms based on mutual respect and trust?
I truly think that if we as humans, meet a dog's needs as a dog's needs need to be met, then the relationship between human and dog will thrive. And these needs have nothing to do with "human does ____ before dogs", or "showing the dog who is boss", but it's far more a parental role in teaching them with guidance, showing them what is allowed and what is not, but most importantly, providing for them what they, as dogs, need (water, shelter, safety, stability, trust, exercise, experience in being a "dog", being a part of the familial group - social feedback, grooming, medical care, mental stimulation, etc). If you provide these things, even with minimal training you are going to have a very strong relationship with your dog.
Kim MacMillan