[Bubbles05]

We have a 6 year old 4.5lb yorkie that we are crazy about. I've toyed with the idea of getting a second one for years but just never could make up my mind about it. Last week we decided to foster a yorkie. It happened very quickly without much time to think about it. Our foster pup is 8 months old and she is 10 lbs. My dog is so upset and every day has just been getting worse. She is becoming anxious, hiding, snapping at our foster pup. I have never seen her act like this around another dog in the 6 years we have had her. (She has been around plenty of dogs in her lifetime) Everyday is just getting worse. I am so stressed out about this and I was hoping to be able to adopt this foster pup but I'm feeling like this whole thing was a mistake and maybe my dog is just too old now to add another one. I feel awful and so guilty at the thought of returning this foster pup I have no idea what to do. Will I regret it if I don't give this a chance? Or should I give her back so she can find a proper home? I feel like the worst person right now. Any advice would be greatly appreciated.