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Updated on September 23rd, 2025
Pet's info: Dog | Maltese | Female | spayed | 22 lbs
Why is one of my dog’s nipples constantly leaking? Background: ~10yrs old. She had a hysterectomy and a mastectomy in December of 2019 due to mammory tumors that were supposedly benign. We never noticed it leaking before and now it is constant. The discharge is clear (seems to turn yellow when it dries on the fur) and does not smell. It does not seem to bother her. The fur around it gets stiff and is difficult to wash out.
1 Answer

Answered By Dr. Strydom, DVM
Veterinarian
Published on April 23rd, 2020