Between 2007 and 2011, chronic kidney disease increased 15% in cats, who are seven times more likely to have it than dogs. (Dog Watch, July 2012, a publication of Cornell University College of Veterinary Medicine.)
The increase in chronic kidney disease can’t be attributed solely to overweight. It can result from any condition that damages the kidneys over time, including bacterial infections, chronic high blood pressure, chronic urinary-tract infections, kidney stones, toxins – such as antifreeze-, and tumors.
Older dogs and certain breeds such as the Basenji, English Cocker Spaniel, and the English Springer Spaniel are at greater risk. Dogs are symptom free in the earliest stage. Initial signs are typically increased water consumption and urine volume. Bad breath, inactivity, poor coat condition, lessened appetite, vomiting, and weight loss are other signs of kidney disease. (Dog Fancy, May 2013.)