Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Went through this last summer with my wife's dog of 13 years. The last 3 years of that dog's life we had spent about $7K in vet bills, surgeries and overnight stays in the pet hospital. I've also had to do it several other times and the first was with the dog my dad got me when I was 3 months old and we were a few months different in age and at 13 it was time. My dad left the decision up to me then but he was hurting every bit as much as I was. That dog was as much of a brother to me as a human would have been, maybe more so. I won't go into the most gut wrenching one because I don't want to discuss it and it hurts thinking about it and how it had to be done. Maybe one day I'll open up and get it off my chest but not today.If you're asking yourself if it's time, then it's probably well past the time. With my wife's dog, I just kept telling her about the life the dog was living. It's hard to think about money at a time like that but the amount of money we had spent was excessive, even for the most beloved 4 legged friends but I was willing to go further if the dog could live a decent life. The vet was great with everything and helped my wife make the right decision. Hopefully the vet you're dealing with is compassionate and will help guide you the right direction. If not, find one that will if possible. This is too hard of a thing to go through without having someone helping you. Also I hope the vet doesn't tell you something just to keep making a good chunk of change on keeping the pet alive, I know that has happened before but I'm sure it's not very common.