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My senior dog has breast cancer and sores. Is it spreading? Should I put her down?

Updated On September 23rd, 2025

my older female dog has breast cancer been about 4 years since found out now she is getting sores on her what could it be could the cancer spread and should I put her down don't want her to suffer she is 13

2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 19th, 2017

I'm sorry your dog is so sick! Yes, malignant cancer will spread, and the sores could be due to it spreading. I would have her checked out by a vet to be sure, but if she is in pain and suffering, it is time to let her go peacefully. I work with a home euthanasia service, and I face these decisions with owners every day. I'd be glad to consult with you further on this if you'd like, simply click the "consult online" button under my answer. Again, I'm sorry she's sick :-(

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    Answered By Andrea M. Brodie, DVM

    Veterinarian

    Published on

    Getting sores means that the cancer is growing too big for the skin to contain it. This will make open wounds that get infected and may be painful. Listen to your dog. She will tell you when it is time to go. If you see that she is not happy all the time, slows down significantly, has infections, possibly breathing problems, then give her the gift of an easy passing.

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