Creatinine level...? Well, it turned out the he had Toxoplasmosis, but his kidneys were round and one was bigger than the other when we did an x-ray and ultrasound. The vet specialist said it was likely an "incidental finding at this time." What could cause misshapen kidneys in a cat? Can it shorten his life span? There were no masses, cysts or tumors or anything and to this day he is perfectly fine. Both the vet and vet specialist didn't show too much concern for it at the time except for the creatinine level. Just curious...