RIP Rocky 

 ... 
We had to make the tough choice for Mogli on new years eve.  Just 1 week shy of his 7th birthday.  It is so difficult.  You know in your heart that you did everything you could for Rocky, and he knew it was time to cross the rainbow bridge. 
It is both painful and great that we have the ability to make decisions like this to stop the pain and suffering.  Holding them through it all takes a really strong person. 
I too basically start balling whenever I read a thread in this area.  But I know how much it helped to read YTers comments ... and I wish to provide the same comfort, when you're going through something and can't find it.