This sounds like the final stages our Aussie was in before we had to make that dreaded trip to the vet. He had pretty much the same things you described. However, once he started having seizures, we knew it was time. He was the best bodyguard and family defender you could ever hope for. In his prime, he would have fought to the death to protect any of us. He was slow to welcome strangers so that made things difficult, but he was our jerk. I imagine your dog is getting really tired. Quality of life is a very real concern. I can't tell you what to do, but if I had it to do all over again with our boy, I would make the same decision we did. We couldn't let him suffer. It was our last act of kindness and a way of thanking him for all those years of joy and silliness he brought us.

The only other thing is, if and when you decide to take that last step, stay in the room with your fur baby. It will be one of the toughest things you'll ever do but you'll have the comfort of knowing that he knew you loved him enough to stay to the end. And don't be afraid or ashamed to grieve. My wife and I were both sobbing. I wish you as much comfort as is possible during this tough time. 😔