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Why does my dog have a blue spot on her stomach near her nipple?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 1 year and 5 months old | 20 lbs

My dog has a blue spot on her stomach, right beside one of her nipples. It appeared yesterday morning and it’s about an inch long and an inch wide. She’s been eating, pooping and playing normally, but she is not spayed (yet). What could have caused this discoloration?? Is it a sign of something more serious?

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on July 30th, 2019

Thanks for using Petco Pet Education Center, formerly Petcoach! This is most likely a blown vein underneath which could have been caused by some form of trauma. I would recommend continuing to monitor this for now. If not resolved in 1 week, have her evaluated by a veterinarian for further assessment and treatment. Best of luck!

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