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My old dog is weak, breathing poorly, and has spots on his lungs. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered | 15 lbs

My dog is a 16 year-old mixed breed. Took him to two vets and they couldn't determine the cause of his symptoms. His symptoms are: 1. X-Ray on his chest shows that there are numerous white spots (tiny to small sizes) on his lungs. (Blood test didn't show any particular problems, according to the vets) 2. He is not breathing well. 3. His muscle mass and weight loss seems to be quite severe. 4. Still has strong appetite for food. 5. Has hard time getting up, standing, etc., due to lack of muscles.

1 Answer

Most Helpful Answer

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Answered By Maria DVM

Veterinarian

Published on May 13th, 2018

Without seeing the x-rays and blood work it is difficult to say what is wrong with Tori. I am concerned about some type of cancer if there are spots on his chest and he isn't breathing well. I would recommend discussing this with your veterinarian, going to get another consult or you can always upload up to 3 images when submitting a question. Thank you for using Petco Pet Education Center, formerly Petcoach.

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