Sorry to hear you are facing one of the toughest decisions one has to make. As pets can't talk for themselves, so we must ultimately help them.
I had to have my beloved Fletcher put down, almost 3 years ago (come Feb.2011). I knew it was time, they WILL let you know when they are ready, you just have to listen (so to speak).
We made a big move to a new province, and at that time, he was 12 years old. Before the move, he was getting more and more tired, but, he was not ready to leave us, he couldn't stand to be away from any of us, especially my young daughter whom he loved more then anyone or anything, he was her constant companion and guardian.
We had only been moved to the new province for two months when Fletcher finally showed how the age was affecting him and the pain he was in. I took him for a walk along the ocean, and knew it would be his last real walk.
My hubby took him for a walk to the mail, and poor fella, couldn't make it up the hill.
I said to Fletcher two days before he passed that it was okay if he wanted to go... to be at peace and pain free. Two days later, he gave up. He went out for a pee, sat down in the grass , in the rain and would not get back up. I went out , helped him inside, in the kitchen he sat down, he laid is head in my hands. we stared into each others souls for one last time. he then laid down, never to walk again. Each time I got up , he'd cry. My 6 year old (at the time) daughter, drew him a picture.
I had my landlord drive us to the vet in a town 20 min. away, as the local vet said it wasn't an emergency and wanted me to wait until morning (this was almost at 10 at night)
It took me over an hour to give the nod to the vet. Hardest decision I've ever made, but, I knew it was the thing to do. It was the only thing to do.
I was so angry with myself for every time I ever scolded him.
I know he is pain free now, and the vet said he had never seen a dog with so little muscle mass, he suffered I believe from muscular myleopathy.
He hung in as long as he did, I believe, to be with his girl.
I wish you the best in your decision. You will know when it is right, even though it hurts so bad.
It's a decision you have to make on behalf of your four legged family member.
I still miss my Fletcher, always will, there will never be another dog like him for our family. I hold onto the memories, and it helped me by making a coffee table photo book. I feel blessed to have had him in my life for 13 years.
My favorite saying is:
DON'T CRY BECAUSE IT'S OVER, SMILE BECAUSE IT HAPPENED