Pale, white, blue, bright red, or yellow gums in your cat? Upload a photo for instant AI triage — detect anemia, FeLV, feline asthma, stomatitis, jaundice, or toxin exposure. ⚠️ If gums/tongue look pale, blue, or yellow AND your cat is weak, open-mouth breathing, or not eating — drive to an ER immediately. Acetaminophen (Tylenol) and lily poisoning kill cats within hours.
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This tool provides AI-generated preliminary analysis only. Not a substitute for professional veterinary diagnosis.
Good photos

Gum lifted, natural light

Tongue during yawn
Avoid

Flash glare

Mouth closed

Gently lift your cat's upper lip OR photograph the tongue during a yawn. Tongue is often easier in cats — especially breeds with pigmented gums like Russian Blue or Maine Coon. Use natural daylight, no flash.

Our AI examines color — pink, pale, white, blue, purple, yellow, bright red, or black — and applies cat-specific logic (FeLV, feline asthma, HCM, stomatitis, lentigo patterns) to determine meaning.

Receive a detailed report with the likely meaning and urgency level — ER now, same-day vet, or monitor at home. Includes cat-specific cautions (acetaminophen is acutely fatal, stomatitis signs, FeLV risk).
Cat gum color is one of the fastest health checks you can do at home — 5 seconds, no equipment, and it flags most medical emergencies before other symptoms appear. Cats are more stoic than dogs, so a color change often appears BEFORE the cat acts sick. Here's what each color means and when to act. Also try our cat dental checker or cat vomit checker or dog gum checker.
Healthy cat gums are salmon pink or bubblegum pink, moist, smooth, and refill in under 2 seconds when pressed. The tongue should be similar pink with slightly rough texture from the tiny backward-facing papillae. Some cats have naturally pigmented (black) areas — breeds commonly affected: Russian Blue, Persian, Maine Coon, Siamese mixes, orange/calico/tortoiseshell cats. This is benign lentigo and is stable over years. When reading color in pigmented cats, find a non-pigmented area (often the inner cheek, tongue, or gum near the canine on the opposite side) for a true reading. Take a baseline photo of your cat's healthy gums once — it makes comparison during illness dramatically easier. Monthly check: lift lip, check color, test capillary refill. This 5-second habit catches silent killers early.


Pale pink, white, or ghostly gums in cats are a medical emergency. Common cat-specific causes: (1) Feline Leukemia Virus (FeLV) — one of the most common causes of cat anemia; often gradual paling over weeks to months with mild lethargy. (2) Feline Infectious Anemia (Mycoplasma haemofelis, formerly Haemobartonella) — acute pale gums + fever + lethargy. (3) Chronic Kidney Disease — extremely common in senior cats; failing kidneys stop producing erythropoietin, causing slow anemia. (4) Internal bleeding from abdominal tumor, trauma, or coagulation disorder. (5) Severe flea infestation in kittens — fleas can drain a young kitten's blood alarmingly fast. (6) Acetaminophen (Tylenol) toxicity — DESTROYS cat red blood cells; even half a tablet is fatal; gums progress from pale to brown-blue. (7) Immune-mediated hemolytic anemia. (8) Severe shock from sepsis, heat stroke, or severe allergic reaction. White gums + weakness or rapid breathing = ER NOW. Pale gums in a young kitten with fleas = immediate vet. Never wait to see "if it improves" — cats decompensate suddenly after looking okay.
Blue, purple, or gray-blue gums (cyanosis) in cats always indicate low oxygen. Top cat-specific causes: (1) Feline Asthma — VERY COMMON in cats, can cause acute respiratory distress with blue gums and open-mouth breathing; breeds prone include Siamese and Burmese; treated with inhaled Flovent (via AeroKat spacer) and oral meds. (2) Hypertrophic Cardiomyopathy (HCM) — the most common cat heart disease; Maine Coon, Ragdoll, British Shorthair, and older cats predisposed; can cause sudden blue gums with pulmonary edema or saddle thrombus (where a blood clot blocks the rear legs). (3) Acetaminophen (Tylenol) poisoning — CATS CANNOT METABOLIZE this drug; a single regular-strength tablet destroys hemoglobin causing methemoglobinemia (chocolate-brown blood); gums turn brown-blue; DEADLY. (4) Lily poisoning (Easter lily, tiger lily, day lily) — causes acute kidney failure; gums can appear dusky. (5) Pneumonia, pleural effusion, or lung tumors. (6) Airway obstruction or choking. (7) Late-stage heatstroke. (8) Congenital heart defects in kittens. Blue gums + open-mouth breathing = hold the cat still, get to ER within 30 minutes — DON'T delay by trying home remedies or restraining for long carrier struggles.


Bright red or intensely inflamed cat gums most often indicate dental disease — something VERY common in cats. (1) Gingivitis: red rim at the gum-tooth junction, one of the earliest dental signs; 50-90% of cats over 4 have some degree. Reversible if treated early. (2) Stomatitis (feline chronic gingivostomatitis): widespread bright red inflammation covering gums, inner cheeks, back of throat, sometimes tongue; a cat with stomatitis cries when yawning, drools constantly (often blood-tinged), refuses hard food; immune-mediated, often triggered by FeLV/FIV/calicivirus; many cats need full-mouth extraction for relief (60-80% success). (3) Tooth resorption: red raised spots at the gumline near affected teeth; extremely common in cats (30-70%). (4) Ulcers on gums: caustic ingestion (cleaning products, some plants), calici virus, uremic ulcers from kidney disease. (5) Heatstroke: whole gum appears bright/cherry red; combined with panting, drooling, elevated temperature. (6) Carbon monoxide poisoning: rare but possible (furnace leak). For gingivitis/stomatitis/resorption — see our cat dental checker for detailed assessment. For bright red + panting + hot-to-touch cat — cooling with damp towels and emergency vet.
Yellow-tinged gums, tongue, or whites of the eyes in cats indicate jaundice (icterus) — a buildup of bilirubin. Cat-specific causes: (1) Hepatic lipidosis (fatty liver disease) — THE MOST COMMON cause of yellow gums in cats; triggered when a cat stops eating for even 48-72 hours (especially overweight cats); rapidly fatal if untreated. (2) Cholangiohepatitis or cholangitis — inflammatory liver/bile duct disease, often triad disease with IBD and pancreatitis. (3) Lily toxicity — acute kidney + liver failure. (4) Acetaminophen (Tylenol) toxicity — destroys red blood cells faster than liver can clear their pigment. (5) Immune-mediated hemolytic anemia. (6) Feline Infectious Peritonitis (FIP) — viral disease causing liver changes. (7) Hyperthyroidism in advanced stages. (8) Liver cancer in senior cats. Yellow gums + not eating for even 2 days = EMERGENCY (hepatic lipidosis can kill a cat in under a week). Yellow gums + yellow whites of eyes + vomiting + lethargy = same-day vet, no exceptions. Caught early, many cat liver diseases are very treatable.


Black pigmentation on cat gums is almost always benign lentigo — harmless hyperpigmentation, especially in orange, calico, tortoiseshell, and black cats. Lentigo features: flat (not raised), uniform smooth surface, symmetric, painless, develops slowly over months/years, doesn't bleed, doesn't change. Breeds with natural dark pigmentation from kittenhood: Russian Blue, Persian, Maine Coon, Siamese mixes. This is normal — it's just melanin distribution, not disease. WHEN TO WORRY: sudden new dark spots (weeks rather than years); raised or lumpy rather than flat; irregular borders; bleeding or ulceration; bad breath accompanying; cat dropping food or drooling. Oral melanoma is uncommon in cats (more common in dogs) but does happen — any new raised pigmented mass warrants a biopsy within a week. Other causes of dark gum areas: old bruising from trauma (resolves in 1-2 weeks), dental infection with necrotic tissue (foul smell, obvious dental disease), certain medications (rare). In almost all cases: flat + stable = lentigo, no action needed. New + raised = vet.
Some cats have heavily pigmented gums from birth — Russian Blue, some Maine Coons, Persians, Siamese mixes, and many mixed-breed cats can have partially or mostly black gums as their NORMAL baseline. This makes color triage (pale, blue, yellow, red) difficult on the gums themselves. The solution: USE THE TONGUE. Cat tongues are typically pink regardless of gum pigmentation, and the same color-triage logic applies (pink = healthy; pale = anemia; blue = hypoxia; yellow = jaundice; bright red = inflammation). Photograph the tongue during yawns, grooming, or panting — you don't need to pry the mouth open. You can also check the inner lip margin, the conjunctiva (inner eyelid — should be pink), or nose color changes (some cats' noses also signal pallor). For pigmented cats, establish a baseline tongue-color photo once — just like you would for gums — and compare against it during any illness. This approach makes AI color analysis much more reliable for breeds like Russian Blue where gums give almost no color information.

Upload a photo now. Our AI assesses color and severity — and tells you if it's an ER emergency, a same-day vet visit, or something to monitor at home. ⚠️ If gums are pale, blue, or yellow AND cat is weak, open-mouth breathing, or not eating — skip the tool and drive to an ER. Acetaminophen and lily poisoning kill within hours.
Check Cat Gum & Tongue Now →PawCheck provides AI-generated preliminary health analysis for informational and educational purposes only. This service is not intended to replace professional veterinary advice, diagnosis, or treatment. The AI analysis has inherent limitations and may not always be accurate. Always seek the advice of a qualified, licensed veterinarian with any questions regarding your pet's health. Never disregard professional veterinary advice or delay in seeking it because of information provided by this tool. If your pet is experiencing a medical emergency, contact your veterinarian or emergency animal hospital immediately. By using this service, you acknowledge and agree to these terms.

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