Unanswered: Dark build-up around dog's teats, looks like dried dirt but doesn't come off
Hi,
I recently noticed some dark, what appears to be crust, around my pug's back teats. She is fixed, and has had a litter of puppies and I think it has something to do with having nursed in the past. Should I be concerned? It doesn't seem to bother her, from what I have noticed.
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