Why is the Roof of my Dog Mouth Black? 8 Reasons

Recently, the dog’s escort team received a query on an email asking Why is the Roof of my Dog Mouth Black? Is this normal, or do I need to be concerned?

There are several reasons why a dog’s mouth might be black. Some are considered normal, while some may be a sign of any problem.

In this post, we’ll explore some of the reasons why a dog’s mouth might be black? And what you can do to overcome this issue.

Why is the Roof of my Dog Mouth Black

Why the roof of my dog mouth is black?

After in-depth research by our pet experts, we identify the 8 most common reasons for black spots on the dog’s mouth roof, tongue, and inside the mouth.

Below are some main reasons for black spots in the canine’s mouth, roof, tongue, and gums. 

1) Breed Factor

Several dog breeds have black mouths or black patches inside the mouth. Many dog owners, especially hunters, believe that dogs with black spots in their mouths are purebred and have superior cognitive abilities.

However, a dark mouth is not necessarily a sign of a purebred dog or a genius dog with superior cognitive abilities.

There are about 45 dog breeds that have naturally black spots on the tongue, mouth, and black gums.

2) Color Ingestion

Many owners sometimes notice their dog’s mouths turn black after eating something outdoors. While it may be alarming initially, however, this is usually nothing to worry about unless your canine didn’t eat some things poisonous.

The discoloration is sometimes caused by natural dyes in the grass, dirt, food, and other plant matter. These dyes are harmless and will eventually fade on their own.

3) Mouth Injury

Dog’s mouth contains several types of bacteria, and even a small injury can lead to infection. Symptoms of a mouth infection include severe discomfort, swelling, black and red spots in the mouth, and drooling.

Mouth Injury in dogs

If your puppy shows any of these signs, it’s important to take them to the vet immediately.

Left untreated, a mouth infection can quickly spread to other body parts and become life-threatening.

Dogs can also suffer from injuries to their teeth and gums. Common causes of dental injuries include chewing on hard objects, falling, and being hit by a ball or other object.

If your pooch has a dental injury, it may exhibit pain, bleeding, and difficulty eating. Seeking veterinary care as soon as possible is important to prevent further damage.

4) Microscopic Melanin Granules

You’re not alone if you’ve ever noticed black spots on your dog’s tongue, gums, or inside the lips and mouth. These spots result from heavy pigmentation and are caused by microscopic melanin granules.

While they are benign and typically nothing to worry about, they can sometimes indicate an underlying health condition.

If you notice any changes in your dog’s appearance, or if other symptoms accompany the spots, it’s always best to consult with your veterinarian. However, these black spots are a harmless cosmetic issue in most cases.

5) Plaque and Tartar

Like humans, pet owners need to care for their furry friend’s teeth and gums to maintain good oral health. Plaque is a sticky film of bacteria that forms on teeth, and if it isn’t removed, it can harden into Tartar.

Tartar can cause gum disease, leading to infections, tooth loss, and other problems. In addition, plaque and Tartar can make your dog’s mouth feel black.

If you suspect your dog has plaque or tartar buildup, take them to a veterinarian or animal dental specialist for cleaning. Regular brushing at home can also help to prevent plaque and tartar buildup.

By taking care of your dog’s teeth, you can help them stay healthy and avoid mouth problems in the future.

6) Fungal Stomatitis

Fungal stomatitis is a condition that can affect dogs of all ages, breeds, and sizes. The most common symptom of fungal stomatitis is a blackened or discolored mouth.

This can be caused by plaque and tartar on the teeth or by a fungal infection. In severe cases, the blackening can extend to the tongue and gums.

Other symptoms of fungal stomatitis include bad breath, drooling, and difficulty eating.

If you suspect your dog may have this condition, it is important to take them to the vet for a diagnosis.

Fungal stomatitis is treatable, but it will require a course of antifungal medication. 

7) Gingivitis

Gingivitis is a condition characterized by inflammation of the gums. It can cause severe discomfort and can lead to changes in the mouth, such as redness, swelling, and bleeding.

In some cases, gingivitis can also cause black spots on the gums and roof of the mouth.

If left untreated, gingivitis can progress to periodontitis, a more serious condition that can damage the bones and tissues supporting the teeth. Gingivitis is often caused by poor oral hygiene.

Treatment for gingivitis typically focuses on controlling the inflammation and promoting good oral hygiene. In severe cases, surgery may be necessary to remove damaged tissue.

8) Use of Certain Medications

Many things, including medications, can cause changes in the color of your dog’s mouth. If you notice that your dog’s mouth is a different color than usual, contact your veterinarian for confirmation.


Many veterinary medications can cause changes in mouth color, so it is important to be aware of these side effects. Some medications may only cause temporary changes, while others may cause permanent changes.

In some cases, the color change may indicate a more serious problem. Therefore, you must consult your veterinarian if you notice changes in your dog’s mouth color.

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Are dogs’ black mouths normal?

Most of the time, black spots in a dog’s mouth are nothing to worry about. However, if you notice any changes in your dog’s appearance or behavior, it’s always best to consult with your veterinarian.

In some cases, black spots may be a sign of an underlying health condition that needs to be treated.

What dog breed has black spots on the roof of the mouth?

Certain dog breeds, particularly Chow Chow and Shar-Pei, have naturally black spots on the mouth. However, these spots can also be due to certain medical conditions like Pigmentation disorders or Cushing’s disease.

A trip to the vet would be ideal for getting a better understanding of the cause behind such black spots.

Does a black mouth mean a dog is smart?

There is no real consensus on what a black mouth indicates in terms of canine intelligence, but some believe it is a sign of higher intelligence in dogs. There is no scientific evidence to support this claim.

If you have any question about dogs health, Care, Food and Medications let us know in the comment section.

Thank You!!!

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