When my RB Peeka had to have her tail amputated (due to abuse from kids trying to skin her alive; they got all the fur off her tail and then broke it), my vet at that time said that he had to be really careful when operating so that he didn't hit the nerve back there that would render Peeka incontinent. He did an excellent job and Peeka lived to be 14 before she passed of acute renal failure. If this kitty can use the litterbox, the vet may be able to rig some sort of harness w/wheels for where his legs used to be. Poor sweet boy. I'm going to say some extra good prayers for this sweet one tonight. What in the world got ahold of this little guy?