I don't think we are ever ready to say goodbye.
You are so right about that. I think you just "know". I had to have my Cocker put to sleep at 12 years old. It ranks as one of the saddest days of my life. She had lost control of her bladder and bowels, and I literally picked her up and carried her outside and back in. It took me too long, probably, to realize that she was miserable. I was selfish in that regard, but finally a friend saw what I was dealing with, and suggested it was time. It opened my eyes to hear him say that, and I did make that difficult decision. But it is different for everyone.

Please know that we will be here for you when you need us. It's a bad way to welcome you to Pet Talk, but you will find friends here, who completely understand what you are going through. My thoughts and prayers will be with you and your special pup. I'm so glad to know that he has had these 5+ years in your happy home with lots of love. 15 years is a long time to live, and it sounds like the last 5 years have been his happiest!