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My unspayed female dog has crusty, leaking nipples. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Border Collie | Female | unspayed | 3 years old

I was just stroking my 3-year-old female unspayed border collie when I noticed the fur around two of her nipples had a yellowy/white crust around it. I cleaned it off but then found that one of her nipples was leaking. What could this be and do I need to make an appointment with her vet?

1 Answer

Most Helpful Answer

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Answered By Ann Dion, DVM

Veterinarian

Published on April 2nd, 2017

Hello. If she recently had her heat (about 1 month ago) then she chould be having psuedopregnancy. This is not a concern unless she develops a mastitis. If the nipples and glands are soft, not hot or cold, and not sore to touch, and if the milk is white and not clear, yellow, green, or has a bad smell, then you can monitor her. If you are noticing any yellow/green/clear discharge from the nipples then you need to get her to a vet ASAP. Prevent this in the future by having her spayed. Good luck with your little girl.

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