What Color is Dog Saliva? Truth with Examples

Dog saliva, often referred to as “drool,” is a fascinating subject of curiosity for dog owners and enthusiasts. The color of dog saliva can vary significantly depending on factors such as breed, health, diet, and hydration levels. 

While many people associate dog saliva with a clear or white color, the truth is that it can exhibit a wide range of hues. 

In this article, we delve into the various factors that influence the color of dog saliva, debunking common misconceptions and shedding light on this intriguing aspect of canine biology.

Normal Color of Dog Saliva 

Typically, the normal color of dog saliva is clear or slightly milky white. The saliva is comprised of water, enzymes, electrolytes, and other proteins, which collectively give it a translucent appearance. 

The primary purpose of saliva is to facilitate the digestion process, lubricate the mouth, and assist in swallowing.

Factors Affecting Saliva Color

Despite the typical clear or white color, there are several factors that can cause variations in the color of dog saliva:

Diet: The food a dog consumes can influence the color of its saliva. For example, if a dog eats pigmented foods, such as beets or berries, the saliva may take on a slightly pinkish or reddish tint. Similarly, consuming foods high in artificial dyes can temporarily alter the color of the saliva.

Health Conditions: Certain health conditions can affect the color of dog saliva. Infections in the oral cavity or the presence of dental diseases, such as gingivitis or periodontal disease, can cause saliva to appear yellowish or even greenish due to the presence of pus or bacteria. 

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In some cases, excessive drooling accompanied by discolored saliva may indicate underlying health issues that require veterinary attention.

Medications and Supplements: Dogs taking certain medications or supplements may experience changes in saliva color as a side effect. For instance, iron supplements can give the saliva a darker or rust-like appearance.

Dehydration: When a dog becomes dehydrated, its saliva may become thicker and stickier, resulting in a slightly yellowish or darker shade. Dehydration can occur due to various reasons, including excessive heat, inadequate water intake, or underlying health problems.

Breed Variations: Different dog breeds may naturally have saliva with slightly different hues. For example, some breeds, like the Saint Bernard, are known for having more viscous saliva, which can appear frothy and have a whitish tint.

Abnormal Saliva Colors 

While most variations in saliva color are harmless and temporary, some abnormal colors may indicate health issues that warrant veterinary attention. Here are a few abnormal saliva colors and their potential causes:

Brown or Rust-colored: Saliva with a brown or rust-colored appearance may indicate the presence of blood. Possible causes include oral injuries, gum disease, or even more severe conditions like tumors or bleeding disorders.

Yellow or Green: Saliva that appears yellow or green can be a sign of infection or the presence of pus. Dental infections or abscesses can cause the saliva to take on these colors. It’s essential to address such issues promptly to prevent further complications.

Foamy or Excessively Thick: If a dog’s saliva appears excessively foamy or thick, it may indicate an underlying health problem such as heatstroke, poisoning, or certain respiratory conditions. Immediate veterinary attention is crucial in these cases.

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Blue or Purple: Although extremely rare, blue or purple saliva can be an indication of an underlying medical condition, such as porphyria, which affects the metabolism of certain pigments in the body. 

If a dog’s saliva exhibits these colors, it’s essential to consult a veterinarian for a thorough evaluation.


The color of dog saliva can vary from clear or white to shades of pink, yellow, green, or even rare colors like blue or purple. 

While many variations in saliva color are harmless and temporary, certain abnormal colors may indicate underlying health issues that require veterinary attention. 

Monitoring your dog’s saliva color, along with other symptoms, can provide valuable insights into their overall health and well-being. 

If you notice persistent changes in saliva color or are concerned about your dog’s oral health, it is always best to consult a veterinarian for a proper diagnosis and appropriate treatment. 

Remember, a healthy mouth and proper oral hygiene play a crucial role in your furry friend’s overall health and happiness.