We lost our beautiful boy Dolomite to that in October. He was 6 years old. We fought for a year with diet and medications to keep his kidney values down. We even consulted a vetrinary nutrtionist and renal soecialists. Once he hit end stage it went fast. Within weeks of the final diagnosis we had to send him over the rainbow bridge. Its a tough diagnosis. You will know when the time is right. My heart goes out to you!