Hi guys! I been going back and forth with the idea of getting a sister for Zeus for over a year now. He will be 4 years old in June and we just feel that he gets so bored and lonely. But, on the other hand, he is SPOILED and oh so territorial. Do you guys think that at his age, it would be a good idea to find a sister for him and if so, is it better to get a puppy or a slightly older yorkie?? I need help from my YT peeps!!