Mazzy is roughly 2 years (rescue) we walk a specific 3 mile trail frequently and I notice at the beginning of the summer that she has started marking ... she is exhibiting no other urine related problems and is the only dog in the house...so I do believe it is marking. What is interesting and confusing to me is she does not appear to be a submissive dog and she does not really challenge me much, so I never really considered her alpha either, we have a great relationship and she is well behaved... I met another female German Shepherd the other day at a park I did not notice an dominant behavior, in fact at one point Mazzy licked her face.. and the female was younger than her approx 11 months old, they appeared to be fairly neutral in their play style but we did leave after about 10 mins so did not have the opportunity to watch them for longer. So my question is, isn't marking an indicator of an alpha female? and if it is then what behaviors if any should I be on the look out for? Another reason that I am curious and this is my daughter is getting divorced and will be coming back to live with me, possibly long term... she has an 6 year old female cattle dog mix.... not sure if Hannah is dominant or not .. I have not lived with her for a long time...