I studied this in a course on canine psychology and you are exactly right that they were selecting only for tameness and that it helped answer the question of w

I studied this in a course on canine psychology and you are exactly right that they were selecting only for tameness and that it helped answer the question of why we see certain traits in domesticated dogs. The original work was done by Dmitri Belyaev http://en.wikipedia.org/wiki/Dmitri_K._Belyaev http://en.wikipedia.org/wiki/Dmitri_K._Belyaev