I am shamelessly copying this statement from Ahimsa’s blog – I added the italics.
Association of Pet Dog Trainers Position Statement
There has been a resurgence in citing “dominance” as a factor in dog behavior and dog-human relationships. This concept is based on outdated wolf studies that have long since been disproven. Contrary to popular belief, research studies of wolves in their natural habitat demonstrate that wolves are not dominated by an “alpha wolf” who is the most aggressive pack member. Rather, wolves operate with a social structure similar to a human family and depend on each other for mutual support to ensure the group’s survival.
Continue reading The ‘Alpha Dog’ theory