Gatsby's doing pretty well today. He was certainly happy to see me and get some scritches behind the ears. They'll take the catheter out today, and hopefully he'll be able to come home tomorrow.

It appears that he didn't have an actual blockage, and there weren't any problems inserting the catheter. It seems that he may be having spasms or swelling or something that cuts off the urine flow. The vet thinks that the problem is pretty far back along the urethra and that the regular PU surgery wouldn't really help. I asked about amitryptiline, and the vet said that might be an option.

Thank you all for your good wishes and suggestions. My tuxie boy and I appreciate it!