What is the relationship between Evita and Blondie? Do they play together more than they do with Tuco? When things are going ok what does the pack look like? What I mean is who sleeps where and near whom, eats where and with whom, plays with whom?

I believe that Tuco is feeling a little threatened in what he considered a stable pack until Blondie appeared. Now that Blondie is getting a little older and coming into maturity, Tuco is feeling a little fearful that his pack position will be turned upside down. Especially since he probably does remember feelings of neglect.

Sudden urination problems, if not medical, are usually a sign of trying to show territorial dominance. When you or your husband take Tuco for a ride in the car, is he the only dog or do you take them all? Are there other dogs where you are taking him?

What mix of breeds are all the dogs?

Sorry for all the questions but I am trying to understand the situation a little better.