My male cat has had that problem a number of times. He's about 15 now. They perform sort of a Roto-Rooter type of procedure. Sorry, guys but that's the way it works. Husband usually got pretty squeemish at that. Anyway from now on make sure his food is low ph. It doesn't have to be the most expensive either. I can always tell when it is coming on, he either leaves little blood spots around, or hopefully before that happens, pick him up close to his back legs but still under his stomach and if it is starting he will surely let you know! If he needs to go to the vet then at least it won't be an emergency situation and an emergency bill. Good luck, let us know how he is. carla