I have a 15 year old Papillion. When I brought Ralphie home 1 1/2 years ago, she didn't mind at all. In fact I think he keeps her younger. She wasn't CRAZY about him

, but he didn't bother her. And when I brought Agnes home about 6 months ago, she really liked her. They are really close now and they nap together. So I don't know if this helps, but it is just my personal experience that I went through. Good luck with your decision, it is so great that you are considering an older baby to love