>>4994900 (OP)Dominance theory originated among studies of captive wolves. As people became better able to study wild populations, it became clear that this was not how wolves would normally behave in the wild: a typical wolf pack is a family unit, where the subordinates obey the breeding pair because it's their parents, and eventually leave to find a mate and form a pack of their own.
Either way it is of no relevance to dogs, as studies of feral populations have shown them to behave very differently: pack members will come and go at will, engage in infighting over resources, and mate indiscriminately.