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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed | Male | neutered | 13 years and 7 months old | 40 lbs
Recently My dogs poop has been this dark gray almost black looking on the outside. It is just on the outside of the poop the rest is normal brown color. What could cause this?
2 Answers

Answered By Lauren Kennedy, DVM
Veterinarian
Published on August 24th, 2017
Answered By Jessica Keay, DVM
Veterinarian
Published on June 21st, 2019
I am sorry to hear about your concern for Riley. If she is acting otherwise normal I would just continue to monitor her bowel movements and appetite/energy level. If she continues to have these mucous covered poops, then a visit to her vet may be necessary, they may want to test her for intestinal parasites or put her on medicaiton if the think she could have something like colitis which can cause this type of stool. You can try a probiotic such as Purina Forti Flora at home, but if it continues or she develops vomiting, anorexia or lethargy she should visit her vet.
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