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My old dog has cancer, struggling to breathe, no surgery. What now?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 85 lbs

My dog has cancer, the tumors are pressing on his heart making it hard for him to breath. My vet says he's too old to operate. Is there anything I can do for him, or do I have to let him go?

1 Answer

Most Helpful Answer

Catherine Stecyk

Answered By Catherine Stecyk

Veterinarian

Published on May 23rd, 2019

Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. I’m sorry to hear that Leo has very advanced cancer. When there are tumors in the chest, these are often inoperable, so our goal is to keep Leo as comfortable as possible. At some point, however, especially if Leo is having a hard time breathing, he is likely suffering, and it may be time to consider having him humanely euthanized. It is always hard to let go of our pets, but sometimes it is the best decision when it means we can eliminate their suffering. I hope this is helpful, best of luck with your decision for Leo.
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