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Why is my healthy 9-year-old dog's belly skin turning black?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 9 years old | 85 lbs

My dog is 9 years old and very healthy. He's my service dog. Lately or for the last year or so his skin on his belly has been getting blacker it is normally tan.

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1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on April 2nd, 2019

Darkening pigment can indicate a few things including normal pigmentation, minor allergies or irritation, or endocrine disease such as hypothyroidism. The best option is to have him examined by his veterinarian to look for other clues on the physical exam which may give more details. Starting an omega 3 fatty acid supplement for dogs can also help improve skin health. I hope this is helpful and please feel free to post any additional questions.

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