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The Curious Bag
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Kidney disease in cats can have many origins, from viruses to congenital problems. Symptoms tend not to occur until the cat already has chronic renal failure, according to the All About Cats website.
Kidneys
The kidneys perform a critical role in removing waste from the cat's bloodstream, while ensuring the cat retains the proper nutrients and hydration levels for good health.
Birth Defects
Some cats inherit kidney problems. Malformed kidneys can experience functional problems and eventual failure. Some breeds may suffer more vulnerability to certain defects, as in long-haired cats' tendency toward polycystic kidney failure.
Infections
Viruses common to cats include feline leukemia or peritonitis, and these viruses can cause kidney failure. Pyelonephritis, a bacterial infection, can also damage the kidneys.
Tumors
Tumors in a cat's kidneys, a condition generally referred to as neoplasia, can cause the kidneys to fail. Lymphosarcoma, or lymph cancer, represents one common neoplasia.
Other Issues
Amyloidosis and glomerulonephritis can cause kidney failure in cats. In amyloidosis, protein buildup in the kidney interferes with its ability to function normally, while glomerulonephritis damages the kidneys' ability to filter toxins.
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