UPDATE In Dog Memorial - I am back - with very sad news...

[Taz_Zoee]

I know exactly what you are going through. Everyone told me I'd know when the time had come with my cat, Taz. I would always second guess myself and wonder if it was, then say oh, no it's not. But the last time I took him to the vet I sort of knew it was the last time. And when the vet told me she wouldn't argue with me if I decided to let him go right then, I knew it was time. (oh geez, here are the tears again, over a year later)
Like Scruff is to you, Taz was my baby boy. It was the hardest thing I have ever done, but I do know it was the right thing to do.

You will know (deep down, even if you don't realize it) when it is time. And when that time comes and I read it here on Pet Talk, I will probably cry for you just like I did when I said goodbye to Taz (and like I'm doing right now).

I do hope you have several more months with Scruff though.

[Louie and me]

So many of us know what you are going through right now and it is heart breaking for you. Louie was such a fighter and still wanted his treats and to go for a little walk until the very end. Deciding it was time was the most difficult decision I have ever had to make, but it was time, I know that now. There will come a point when you will realize that Scruff is no longer enjoying life and his bad days far outweigh his good ones. It will break your heart but you will know it is time. In the meantime enjoy his good days and shower him with all the love you have. Our thoughts are with you.