15 month old purebred AKC unaltered Male Shih Tzu in Salem, Oregon For Sale

He is a gentle little guy and a huge sweetheart, however when we Rescued him we just assumed my female and cat would except him because they had all 3 been well socialized with other animals, and always got along well, well we were wrong and poor little guy started off out casted by Deva and her kitty and as of yesterday morning deva has decided to "argue" over dominance or something, but whatever it is after a month of no fighting all of a sudden both dogs are becoming increasingly aggressive (they haven't actually hurt each other or attacked but the snapping and nasty growling is more aggression then either of them has ever shown) and I know its deva not accepting an adult dog into her world but I have had her since she was 8 weeks old and never spent more then 2 consecutive hours without her being with me so she has my heart and it not fair to either of them to keep them together, so he has to find a new home, Hes a 15 month old (born 12-29-12) UNALTERED purebred Tri- colored Male Shih Tzu, he is up to date at this point on vaccines however he will be due near the end of April for his 1 year Rabies and booster. He has no known health issues. We would like to Trade him for a 8-12 week old Purebred Male Llasa Apso or Shih Tzu if cant trade for a male pup we will take $500 Cash, we can bring him anywhere directly off I-5 anywhere from Salem, OR to Seattle, WA