Petco Text Logo
Petco Pet Logo

Dog has untreated cancer. What to expect for comfort and timeline?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | 9 years and 10 months old | 99 lbs

We have had X rays and a CT scan and likely that he has cancer. We have decided to leave him untreated now as he is happy, comfortable, eating and enjoying his walks still. Being prodded by vets was making him very distressed. With our decisions please could you tell us what to expect with his comfort and timeline. Many thanks

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Megan, DVM, CVA

Veterinarian

Published on May 7th, 2018

Poor Yogi! This is such a tough situation. His timeline turly depends on how comfortable he continues to be and how quickly this mass grows and spreads. I would expect that he may only live for a few months since it looks like there are some nodules in the lungs and the mass currently looks pretty big already. The key is to make sure he stays on pain meds as he needs them and don't be afraid to give him the high end of his dose of meds if needed. The key is to keep him comfortable until he has a poor quality of life and at that time, you may choose humane euthanasia. I hope this helps and my thoughts are with you.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored