This is a long tale. We have an 8-year-old Ocicat (a breed created by crossing a Siamese with an Abyssinian and later adding American shorthair). About four years ago we had a new roof put on and the noise was tremendous the whole day. After that, he began to pee outside the box. His littermate brother had no reaction.
Under the assumption that his nerves were shot and he somehow associated the horrible noise with using the box, we have tried Feliway, Prozac, Paxil, and Dr. Elsey’s Cat Attract. Maybe more I can’t remember now.
We have had him checked repeatedly for a urinary tract infection and he’s never had one. The last time he was tested, about two months ago, he had some blood in his urine but no infection. He had an ultrasound that was negative. Based on this, we have been thinking in conjunction with the vet that he’s in pain, maybe inflammation. He sometimes yowls a low guttural sound and then we see that he’s peed. He’s now on gabapentin for pain.
He continues to pee. If anything, he seems to have gotten worse on the gabapentin. I called CSU vet school in Fort Collins and an internal medicine vet is willing to consult with our vet. If they decide it’s worth the 90-minute trip, I’ll take him in for a workup.
We are working with two great cat vets, both at the same practice. They are very understanding and really listen and give us things to try. Unfortunately, we’re not getting anywhere.
Any ideas?
Edit: I should make clear that he does pee in the box just not reliably.