Black Spot on Your Dog’s Tongue: Normal or Something to Worry About?
Black Spot on Your Dog's Tongue: Normal or Something to Worry About?
Your dog stretches, yawns, and suddenly you see it — a black spot on their tongue.
Your heart sinks. Is this serious?
The good news: most black spots on a dog's tongue are completely normal and harmless. Still, some changes should never be ignored. Here's how to tell the difference — calmly and confidently.
Is a black spot on a dog's tongue normal?
Photo source: Reddit
Yes, most of the time.
According to veterinarians, flat black or dark blue spots on a dog's tongue are usually caused by natural pigment (melanin) and are not a health problem, especially if they've been there for a long time.
These spots are similar to freckles in humans and don't affect your dog's health or comfort.
Why do dogs get black spots on their tongues?
The most common reason is melanin, the pigment responsible for skin and coat colour.
Melanin can also appear on:
- Tongue
- Gums
- Lips
- Nose
- Paw pads
Pigmented spots usually:
- Are flat and smooth
- Match the texture of the rest of the tongue
- Appear in puppyhood or early adulthood
- Do not bother your dog at all
Which dogs commonly have tongue spots?
Some breeds are famous for dark tongues:
- Chow Chow
- Chinese Shar-Pei
For these dogs, a blue-black or purple-black tongue is completely normal and part of their genetics.
👉 Myth alert:
A spotted tongue does not mean your dog is "part Chow." Tongue pigmentation has been reported in more than 30 breeds.
When should I worry about a black spot on my dog's tongue?
While pigment is common, certain signs mean it's time to see a vet.
⚠️ Book a vet check if the spot is:
- New in an adult or senior dog
- Growing or changing quickly
- Raised, thickened, or lumpy
- Bleeding, ulcerated, or smelly
⚠️ Other warning signs include:
- Drooling or mouth pain
- Difficulty eating
- Bad breath that doesn't improve
- Facial swelling or loose teeth
These signs may be associated with oral disease or tumours and should not be ignored.
Can a black spot on a dog's tongue be cancer?
Rarely — but it's possible.
Oral melanoma is the most common mouth cancer in dogs. It often appears as a dark mass and may bleed or grow quickly.
Some breeds appear more predisposed, including:
- Chow Chows
- Cocker Spaniels
- Golden Retrievers
- Miniature Poodles
Important: having a black tongue spot alone does not mean cancer.
It's the change in appearance and behaviour that matters most.
How to check your dog's tongue at home
Once a month, gently lift your dog's lips and look inside the mouth.
- Has this spot been here a long time?
- Is it flat and smooth?
- Is my dog eating and acting normally?
If the answer is yes to all three, it's likely harmless.
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When in doubt, a vet exam is the safest choice.
A quick oral check can rule out problems early and give you peace of mind.
Final takeaway
Most black spots on dogs' tongues are normal pigmentation.
Watch for change, not just colour — and trust your instincts.
Frequently Asked Questions
Are black spots on a dog's tongue always normal?
Most flat, smooth black spots on a dog's tongue are normal pigmentation caused by melanin. However, new spots in adult dogs, raised or changing spots, or spots that bleed should be examined by a veterinarian.
Can a black spot on my dog's tongue be cancer?
While rare, oral melanoma can appear as a dark mass in a dog's mouth. Warning signs include rapid growth, raised texture, bleeding, ulceration, and changes in eating behavior. If you notice these signs, consult your veterinarian immediately.
Which dog breeds commonly have black tongue spots?
Chow Chows and Chinese Shar-Peis are famous for blue-black tongues. However, tongue pigmentation has been reported in over 30 breeds and does not necessarily indicate Chow heritage.
References
- American Kennel Club (AKC).
What Are Those Black Spots on a Dog's Tongue, Anyway?
https://www.akc.org/expert-advice/health/black-spots-on-a-dogs-tongue/ - VCA Animal Hospitals.
Oral Tumors in Dogs – Melanoma.
https://vcahospitals.com/know-your-pet/oral-tumors-in-dogs-melanoma - PetMD.
Oral Masses in Dogs.
https://www.petmd.com/dog/conditions/mouth/oral-masses-dogs - Whole Dog Journal.
Black Spot on Your Dog's Tongue?
https://www.whole-dog-journal.com/health/black-spot-on-your-dogs-tongue/
This article is for educational purposes only and does not replace veterinary advice.
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