Pet Education

Browse our veterinary-reviewed Dog and Cat Illness Guide to learn more about pet health. Always talk to your veterinarian if you have a concern about your pet's symptoms or health.
Pet Assure allows pet owners to save on their pet's veterinary care, even pre-existing conditions. Click here to learn more.

Feline Icterus


When the liver breaks down old blood cells, it produces bilirubin. The bilirubin typically leaves the body in the feces.

Icterus is when there is an excess of bilirubin in the body. It enters the tissues and causes yellow coloring in the white of the eyes, gums, and skin.

Jaundice is not a disease in itself but a symptom of other diseases that cause an excess of bilirubin. Some of these diseases are fatal.


There are 3 leading causes for excess bilirubin in the body:

  1. Too many red blood cells are being broken down
  2. Liver disease: the liver can not process the bilirubin
  3. Blocked bile ducts: the bilirubin cannot be excreted


The main signs are yellow eyes, gums, and skin.

Other signs you may notice include:


Tests done by your veterinarian to find the cause of jaundice may include:


Most veterinarians agree that treatment of icterus is to treat the underlying disease. The jaundice will resolve when the disease is cured.

Most pets will require:


Keep your cat away from medications, chemicals, and toxic plants that cause jaundice.


Prognosis depends on the severity of the underlying cause. Some diseases causing icterus have a great prognosis, while others are fatal.

Medically Reviewed by Sara Ochoa, DVM

Welcome Veterinarians

Pet Assure is the largest veterinary network in the U.S. with over 5,600 veterinarians.

Pet Assure powers DVM Network, a brand built to support our participating veterinary professionals and help them grow their practice.

Visit to learn more.