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Why does a dog’s tongue turn black?

2026-01-15 15:05:36 pet

Why does my dog's tongue turn black? Analyze the causes and countermeasures

Recently, the topic of pet health continues to be popular on social media, especially the phenomenon of "black tongue in dogs", which has caused many owners to worry. This article will combine the hot discussions and professional veterinary advice on the Internet in the past 10 days to provide you with a detailed analysis of the possible causes and countermeasures of this phenomenon.

1. Common causes of black tongue in dogs

Why does a dog’s tongue turn black?

Reason typeSpecific instructionsprobability of occurrence
normal physiological phenomenaSome dog breeds (such as Chow Chow, Shar-Pei) are born with black or blue-black tonguesHigh (specific dog breeds)
PigmentationNormal pigmentation that occurs with ageMiddle (common in older dogs)
Trauma or bruisesLocal tissue damage caused by bites and burnslow
signs of diseaseSymptoms of systemic diseases such as heart disease, hypoxia, and poisoningLow (needs to be combined with other symptoms)

2. Accompanying symptoms that require vigilance

If your dog has the following symptoms in addition to a black tongue, it is recommended to seek medical attention immediately:

SymptomsMay be associated with diseasesUrgency
difficulty breathingAbnormal cardiopulmonary function★★★★★
sudden loss of appetiteDigestive disorders/poisoning★★★★
listlesssystemic infection★★★★
White gumsanemia or circulatory problems★★★

3. Self-examination guide for pet owners

1.Observe Timeline: Record the time and speed of tongue color change and whether it continues to worsen

2.Check the mouth: Check for ulcers, foreign bodies or abnormal secretions in a well-lit area

3.behavior monitoring: Pay attention to whether you scratch your face frequently or have difficulty eating.

4.Environmental troubleshooting: Check your home for toxic substances that may be accidentally eaten (such as chocolate, detergents, etc.)

4. Professional diagnosis and treatment suggestions

According to the latest admission data from pet hospitals:

Check itemsAverage cost (yuan)Detection rate
Basic physical examination50-100100%
Routine blood tests120-20068%
X-ray examination200-40035%
Complete set of biochemistry300-60042%

5. Preventive health measures

1.Regular oral care: Use a pet-specific toothbrush to clean 2-3 times a week

2.Diet management: Avoid feeding foods containing artificial colorings and supplement vitamin B appropriately.

3.environmental safety: Store chemicals out of reach of pets

4.Physical examination plan: Adult dogs should undergo a comprehensive physical examination at least once a year

6. Special reminder from experts

Veterinarian Zhang, director of a pet hospital in Beijing, emphasized: "90% of tongue color changes are normal, but sudden blackening accompanied by loss of appetite may be a sign of internal bleeding. It is recommended that owners take clear oral photos to record the change process, which is very helpful for doctors to diagnose."

This article is compiled based on the recent Weibo #pethealth topic list, Douyin pet doctor popular science video, etc. The data statistics period is from November 1 to 10, 2023. If your dog develops abnormal symptoms, please seek professional veterinary diagnosis.

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