Here's some information about why so many domestic cats develop chronic kidney failure. Some causes are high blood pressure, toxins, drugs like NSAIDs (non-steroidal anti-inflammatories), etc. Some breeds that are predisposed to this condition are Maine Coon, Abyssian, Persian, Siamese, Russian Blue and Burmese. http://healthypets.mercola.com/sites...e-in-cats.aspx