Here's why:
* Black gums can be a symptom of several health problems, including:
* Dental disease: This is the most common cause of black gums.
* Liver disease: This can cause a buildup of bilirubin in the blood, which can turn the gums black.
* Addison's disease: This is an endocrine disorder that can cause a variety of symptoms, including black gums.
* Other diseases: Black gums can also be a symptom of other diseases, such as cancer or poisoning.
It's important to note that not all dogs with black gums are sick. Some breeds naturally have darker gums. However, if you notice a sudden change in your dog's gum color, it's best to err on the side of caution and seek veterinary attention.
Remember, I cannot provide medical advice. Please consult a veterinarian for diagnosis and treatment.