Sammi is a one-year-old shepard mix we got from the pound when she was 3 months old. We spent two weeks earlier in August with my sister and her kids and Sammi barked almost constantly at my brother-in-law and my two nephews (both very tall teenagers). When they were seated she might eventually calm down, but when they came into the house, or got up to leave, she would go after them barking and sometimes growling, like she was going to bite them. This went on for two weeks. I have two 8-year-olds who can sometimes be a little overbearing, but she plays with them easily, and she seems to love my niece to no end, wanting to jump up and kiss her all the time. (the sister of the nephews) Sammi is generally timid but has adjusted well to our family, except maybe my husband who she still barks at when he leaves for work in the middle of the day. We are supposed to visit again over the Labor Day weekend, and I am already dreading her behavior. Sammi's "mom"