Hi FFF. My old Bucky-cat died almost two years ago from kidney failure. He'd had it for a while and we managed it, but then noticed he'd suddenly gotten much thinner ( and I thought he was thin to begin with). Then he started vomiting clear saliva/bubbly-type fluid, and finally lost the use of his legs. He dragged himself into the loo and laid by the tub (it was late August so maybe he wanted a cool spot?). The next morning I found him trying to drag himself into the hallway, and that was it, I knew the time had come to let him go. So we took him to the vet wrapped in his favourite blanket, and they placed an IV and sent him off to Rainbow Bridge while I was allowed to have him on my knee and stroke him.
(Sorry, need to have a little cry.)
Ok. That was in 2009. I knew he'd been failing but while he was able to eat and scramble into the couch and cuddle, it was ok. But the moment I knew he was suffering, trying to drag himself on legs that weren't working, it was time to let him go.
I'm so sorry for you and your little moggy. (((HUG)))