I'm heartbroken as I write this. I have a young cat who is not even 2 years old that was diagnosed with CRF.......a death sentence to any cat. This cat has never been outside/outdoors, we have no plants that would contribute to this............no exposure to onions/garlic etc. I'm being told that her BUN and creatinine are sky high, We had her in to see the vet 6 months ago and all was well at that visit but now? 2 YEARS OLD and in renal failure. How did this happen?