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Why is my female dog bleeding, swollen, and acting aggressive?

Updated On September 23rd, 2025

Pet's info: Dog | Coton de Tulear | Female | unspayed | 1 year and 9 months old

My 10 month old female dog developed sudden vulvar bleeding and her vulva is swollen. She is dripping blood around the house although it hasn’t been 3 months since her previous cycle and also her previous cycle wasn’t as heavy. She licks her vulva constantly. She is also becoming aggressive to my other male dog.

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1 Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 6th, 2019

It's not common in younger dogs, but a pyometra can happen and would cause these symptoms. A pyometra is an infection of the uterus that is fatal without treatment. I would be very concerned about this possibility, and I would take Luana into a vet immediately. Best of luck.

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