Are Your Cat’s Gums an Unhealthy Shade? What the Color Says About Illness


When cats are sick or in ill health, they often try to hide it as a natural instinct. Checking your cat’s gums is one way to look for signs of a health problem because the color and appearance of your cat’s gums can indicate if something is wrong. Assessing your cat’s gums periodically can help detect issues early and allow treatment to begin promptly. What color should a cat’s gums be? Read on to learn more about healthy gum color and what changes may signal your cat needs medical care.

Normal Gum Color

Healthy cat gums should be a light pink color. According to Vetwest Veterinary Clinics, normal gum color can range from pale to bright pink when a cat is in good health. The gums supply blood to the teeth and surrounding tissue. As long as the blood flow is normal, the gums will appear an ideal pink shade. This pink color indicates the blood is oxygenated and circulating properly. According to Pet Wellbeing, the gums should not look too pale or too bright of a pink, but rather a healthy medium pink tone.

Pale Gums

Pale gums in cats can be caused by anemia, blood loss, or shock, according to veterinarians. Anemia results in a reduction of red blood cells that carry oxygen through the body and can make a cat’s gums appear pale or white instead of their normal pink color (Chewy, 2023). Blood loss, such as from trauma or a wound, can also deprive tissues of oxygen and lead to pale gums. Shock, which is a life-threatening medical condition where blood pressure drops to dangerously low levels, can result in reduced blood flow and oxygen causing pale gums (Dutch, 2022).

Some specific conditions that may cause pale gums in cats include:

  • Blood parasites like hemoplasmosis that destroy red blood cells
  • Blood clotting disorders
  • Internal or external bleeding from trauma
  • Kidney disease which can cause anemia
  • Cancer like leukemia that affects blood cell production
  • Toxin ingestion from lilies, lead, or antifreeze

Pale gums are a warning sign of a potentially serious medical problem in cats that requires prompt veterinary attention. Checking your cat’s gums regularly can help detect anemia early before it becomes life threatening (Vetster, 2022).

Blue/Purple Gums

Blue or purple gums in cats, also known as cyanosis, indicates lower oxygen levels. This happens when a cat’s body is not circulating oxygen properly. The bluish color develops when deoxygenated blood accumulates near the cat’s skin and mucous membranes. Some potential causes include:

Congestive heart failure – Fluid builds up in the lungs, preventing proper oxygenation.

Respiratory diseases – Conditions like pneumonia reduce lung capacity.

Pulmonary edema – Fluid accumulation in the lungs.

Collapsed trachea – The windpipe narrows, restricting airflow.

Low red blood cell count – Anemia results in reduced oxygen transport.

Lung cancer – Cancerous tumors prevent oxygen absorption.

Cyanosis is a serious condition requiring rapid veterinary care. Prolonged oxygen deprivation can damage the cat’s organs and be life-threatening. Immediate treatment with supplemental oxygen and addressing the underlying cause is necessary. While mild bluish tinges may resolve with rest and calming the cat, any sustained blue or purple color warrants an urgent vet visit. Catching cyanosis early and quickly intervening greatly improves the prognosis.

Bright Red Gums

Bright red gums in cats can signify an underlying health issue that requires veterinary attention. Some potential causes of bright red gums include:

Inflammation: Conditions like stomatitis, gingivitis, and periodontal disease can cause inflammation and reddening of the gums. With stomatitis, the gums become bright red and inflamed. Gingivitis also involves red, swollen gums due to inflammation.

Infection: Bacterial, viral, or fungal infections in the mouth can lead to bright red gums. Infection causes inflammation and irritation. Gum infections are common with gingivitis and advanced dental disease.

Injury: Trauma to the gums from a foreign object getting lodged or from mouth injuries can cause redness and bleeding. Cuts, scrapes, or puncture wounds may appear as bright red areas.

Toxins: Exposure to toxins like antifreeze (ethylene glycol) can irritate the gums and make them appear reddened. The toxin cyanide can also cause bright red gums.

If you notice your cat has bright red gums, it’s important to have your vet examine them. Leaving gum infections or other issues untreated can lead to more severe dental disease, tooth loss, and possibly spread infection. Your vet will determine the underlying cause and recommend appropriate treatment.

White Gums

White gums in cats can be a sign of extremely serious health issues that require emergency veterinary care. Some potential causes of white gums include:

Blood Clot – A blood clot in the arteries can block blood flow and oxygen, leading to pale white gums as the tissues become oxygen deprived. This is a medical emergency requiring immediate veterinary treatment. 1

Trauma – Severe trauma from an injury, accident or abuse can cause shock, blood loss and lack of oxygen circulation. The gums will turn white. This requires emergency medical care to address the underlying trauma and stabilize the cat. 2

Toxins – Exposure to certain toxins like antifreeze can cause severe internal issues that lead to oxygen deprivation and white gums. Seek emergency vet treatment if toxin exposure is suspected.

As you can see, white gums indicate a dire health situation where the cat’s tissues are not receiving proper blood flow and oxygen. Immediate veterinary treatment is necessary to determine the cause and treat the underlying condition before it’s too late.

Yellow Gums

Yellow gums in cats can indicate a condition called jaundice or icterus. This occurs when there is an excessive buildup of bilirubin, a yellow pigment, in the blood and tissues (source). The yellow color comes from the bilirubin depositing in the gums, eyes, ear flaps, and foot pads.

There are several potential causes for jaundice in cats:

  • Liver disease – If the liver is damaged or diseased, it may not be able to effectively process and excrete bilirubin from the bloodstream.
  • Blocked bile ducts – Obstructions in the bile ducts prevent the flow of bile, allowing bilirubin to build up.
  • Hemolysis – The premature destruction of red blood cells releases excess bilirubin.
  • Toxins – Exposure to toxins like antifreeze can damage red blood cells.

Jaundice stems from both liver-based and non-liver-based conditions. Since the liver filters toxins from the blood, any liver malfunction can allow toxins and waste to accumulate. Diagnostic tests like bloodwork, urinalysis, imaging, and biopsies help determine the underlying cause.

Treatment focuses on addressing the underlying condition causing jaundice. This may include surgery, medications, intravenous fluids, nutritional support, and toxin avoidance. Prompt veterinary care is essential for jaundiced cats, as bilirubin can be toxic at high levels.

When to See a Vet

Cat owners should monitor their pet’s gum color closely, as it can indicate potential health issues that require veterinary care. Certain gum colors warrant an immediate vet visit:

  • Blue, purple, white, or very pale pink gums – These colors often signal an emergency health issue like anemia, blood clots, circulatory problems, or oxygen deprivation that needs prompt treatment (Vetwest).
  • Bright red or reddish gums – This typically indicates a fever or heat stroke, which can quickly become life-threatening for cats if not addressed (Pet Wellbeing).
  • Yellow gums – This may point to jaundice or liver disease, which requires veterinary assessment and bloodwork (Vetwest).

In addition to concerning gum colors, lethargy, appetite changes, breathing issues, or other symptoms paired with abnormal gums warrant an immediate vet visit. Prompt veterinary care can be crucial for treating the underlying condition. Pet owners should not hesitate to contact their vet if they notice anything unusual about their cat’s gums.

Caring for Your Cat

It’s important to proactively monitor and care for your cat’s gum health. Here are some tips:

Brush your cat’s teeth daily or several times a week. Use a soft-bristled brush and cat-safe toothpaste. This removes plaque and bacteria to promote healthy gums. 4 Steps to Provide Proper Dental Care for Your Cat

Examine your cat’s gums and teeth regularly for any discoloration, inflammation, or abnormal odors which could indicate disease. Check for plaque buildup as well.

Schedule annual veterinary dental cleanings and exams to professionally clean, scale, and polish teeth. X-rays help detect issues below the gumline. 4 Steps to Provide Proper Dental Care for Your Cat

Feed dry food instead of canned. Kibble helps scrape away plaque and tartar as cats chew. Choose kibble and treats engineered to support dental health.

Use oral rinses and gels between brushings to disrupt plaque bacteria. Only use products formulated for cats.

Provide safe chew toys to satisfy chewing instinct and massage gums. This also reduces plaque buildup.

Promptly treat any gum infections with prescription medication from your veterinarian. This prevents the infection from worsening.


To summarize, the color of your cat’s gums can provide important clues about its health. Healthy gums should be light pink. Pale gums may indicate anemia, while purplish gums can signal poor circulation or oxygenation. Bright red inflamed gums may point to gingivitis. White gums are seen with shock or blood loss, and yellow gums with liver disease. It’s important to regularly check your cat’s gums and familiarize yourself with their normal color. If you notice any abnormal gum color, schedule a veterinary visit right away. Staying on top of subtle changes in gum color is a great way to monitor your cat’s health and catch problems early. With proper observation and care, you can help keep your feline friend happy and healthy.

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