DogsJacobOctober 23, 2026

Yesterday my dog had think dark brown vaginal discharge

Yesterday my dog had think dark brown vaginal discharge. It happened within a small timeframe, it was not consistently happening all day. It happened once, then not again. She was just in her heat cycle, and the last time I saw "normal" heat cycle related discharge was probably a week or week and a half ago, and that heat cycle to my best estimate started around the 20th of September. Maybe a bit before that? Her behavior is completely normal. Eating, drinking, playing, etc. She had soft stool yesterday, not full on diarrhea but softer than normal. Gums look normal and doesn't seem to be in pain (running around, jumping on high bed, sleeping on back). I monitored since last not and have not noticed any additional discharge. The discharge that did come out, I should add, was completely odorless and she does not have any smell coming from her.

A licensed veterinarian’s answer

DWDylan Wilson, DVMVerified VetSmall Animal, Mixed Animal, Preventive Care, Laboratory Medicine · KY license 293504Answered 18h ago

Hello, I'm sorry to see you're concerned. Are you actively trying to breed her? Does she have access to other intact dogs? I am concerned with the time frame after her last heat cycle. I would think it's not a bad idea to get her an appointment to make sure a pyometra is not developing.

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3 replies, one from a vet

A verified vet’s answer sits first, whatever the sort.

JJacob19h agoASKED THIS

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JJacob18h agoASKED THIS

She is the only dog. No access to any other dogs. Never been bred nor any attempts to. She was just outside a few minutes ago and passed normal stool. She then ran around the yard for a while playing and chasing squirrels. The reason I made this post was because I wanted to see if it looked like Pyometra discharge, or if it was more aligned to old reproductive cycle remnants being expelled since its dark brown and coagulated like.

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