TL;DR
Healthy dog gums are bubblegum pink and moist. Pale, white or grey gums mean too little blood is reaching the gums, from blood loss, anemia or shock, and in a dog that is also weak, breathing fast or collapsing it is an emergency. The most dangerous cause in older dogs is internal bleeding from a ruptured tumor: in 1,150 dogs that bled into the belly from a ruptured spleen mass, 73.0% had a malignant tumor, and 87.3% of those were hemangiosarcoma. Other causes include anemia from the immune system destroying red cells, rat poison, heavy parasite burdens, kidney disease and heart failure. Check the color by lifting the lip, and press a fingertip on the gum: the pink should come back within about 2 seconds. Pale gums with weakness, a swollen belly or collapse mean go to an emergency vet now.
Dog gum color chart
| Gum color | What it can mean | How urgent |
|---|---|---|
| Bubblegum pink, moist | Normal | Fine |
| Pale pink | Mild anemia, early shock, or cold and stressed | Vet soon, same day if unwell |
| White or grey | Severe anemia, blood loss or shock | Emergency |
| Blue or purple | Not enough oxygen | Emergency |
| Bright red | Heatstroke, poisoning, infection | Emergency |
| Yellow | Jaundice (liver disease or red cells being destroyed) | Same-day vet |
| Dry and sticky | Dehydration | Vet soon |
Some breeds have naturally black or spotted gums. In that case, check the pink parts, or the inner eyelid, or the inside of the vulva or prepuce.
How to check your dog's gums
- Lift the upper lip in good daylight and look at the gum above a canine tooth.
- Press a fingertip firmly on the gum for a second and let go. The spot turns white.
- Count how long the pink takes to return. This is the capillary refill time. In a healthy dog it is about 2 seconds or less. Slower than that suggests poor circulation.
- Do it now, while your dog is well, so you know what normal looks like for your dog.
What causes pale gums in dogs?
1. Internal bleeding
Bleeding into the belly (hemoabdomen) is the cause vets worry about most in older dogs. It often comes from a mass on the spleen that ruptures. A 2022 systematic review of 1,150 dogs with non-traumatic bleeding from a ruptured spleen mass found:
- 73.0% had a malignant tumor.
- Of those, 87.3% were hemangiosarcoma, a cancer of blood vessels.
- 27.0% had a benign lesion and could do well after surgery.
So a bleeding spleen is serious, but not always cancer. Signs are sudden weakness, pale gums, a swollen belly, fast breathing and collapse, sometimes with recovery in between as the bleeding stops and restarts. See signs of cancer in dogs.
A small-animal vet Morty has known for years, who asked us not to use their name, says Goldens top the tumor list in their clinic: "Regular health checks are a must." See Golden Retriever lifespan.
2. Anemia
Anemia means too few red blood cells. Causes include:
- Immune-mediated hemolytic anemia (IMHA): the immune system destroys the body's own red cells. Gums may be pale or yellow, and urine dark. Specialist consensus guidelines exist for diagnosis and treatment because it can be life-threatening.
- Chronic disease: kidney disease, chronic inflammation and some cancers slowly reduce red cell production. See kidney disease in dogs.
- Parasites: heavy flea or hookworm burdens, especially in puppies and small dogs.
- Blood loss from the gut: ulcers or tumors, often with black, tarry stool.
3. Rat poison
Many rat and mouse poisons stop blood from clotting. Bleeding can start several days after eating the bait, often internally. If your dog may have eaten rat poison, see a vet at once, even if it looks fine; there is an antidote.
4. Shock and heart problems
Shock from trauma, severe infection, bloat or an allergic reaction, and heart failure, can all reduce blood flow to the gums. Gums may be pale and cold with a slow refill time. See congestive heart failure in dogs.
When pale gums are an emergency
Go to an emergency vet now if pale or white gums come with any of these:
- Weakness, wobbliness or collapse
- Fast or labored breathing
- A swollen or tight belly
- Cold legs or ears
- Black, tarry stool or vomiting blood
- Possible rat poison exposure
Phone ahead so the team is ready. Keep your dog warm and quiet on the way.
What the vet will do
- Packed cell volume (PCV): a quick blood test showing what share of the blood is red cells.
- Blood smear and full blood count to find the type of anemia.
- Clotting tests if poison is possible.
- Belly ultrasound to look for free blood and masses, especially on the spleen.
- Treatment depends on the cause: fluids, blood transfusion, surgery to remove a bleeding spleen, vitamin K for rat poison, or immune-suppressing drugs for IMHA.
FAQ
What color should a dog's gums be?
Bubblegum pink and moist. Pale, white, grey, blue, bright red or yellow gums all need attention.
Are pale gums in a dog an emergency?
If your dog is also weak, breathing fast, has a swollen belly or collapses, yes. Pale gums in a dog that seems otherwise well still need a vet visit the same day.
What causes pale gums in an old dog?
Internal bleeding from a ruptured tumor on the spleen, anemia from chronic disease such as kidney disease, and heart problems are common causes in older dogs.
Can a dog recover from pale gums?
It depends on the cause. Dogs with benign bleeding masses, treated rat poisoning or controlled IMHA can recover well. Fast treatment makes the biggest difference.
How do I check my dog's capillary refill time?
Press a fingertip on the pink gum until it turns white, then let go. Normal color should return in about 2 seconds or less.
References
- Schick AR, Grimes JA. Evaluation of the validity of the double two-thirds rule for diagnosing hemangiosarcoma in dogs with nontraumatic hemoperitoneum due to a ruptured splenic mass: a systematic review. Journal of the American Veterinary Medical Association. 2022. PMID: 36322487
- Swann JW, et al. ACVIM consensus statement on the treatment of immune-mediated hemolytic anemia in dogs. Journal of Veterinary Internal Medicine. 2019. PMID: 30847984
- Hillman A, et al. Descriptive analysis of haemangiosarcoma occurrence in dogs enrolled in the Golden Retriever lifetime study. Veterinary and Comparative Oncology. 2023. PMID: 37635246
For individual health questions, your veterinarian remains the best partner.
