He has been peeing more but that's not very unusual for him (he will typically go to the bathroom several times in the course of a few days and then go a period of time with nothing). I haven't noticed a burning smell the odor seems the same but today I noted no urates just a wet spot. I have a vet appointment for him next week so we can get everything looked at. He eats once a week usually a small rat or the biggest mouse my feeder has available.