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How long has my senior dog had an enlarged heart and cough?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered | 9 lbs

Is my dog very sick? He has an enlarged heart 4 rib spaces when the vet said it should be 3. He has had a cough for years but it's been worse in the past year or so. He's on medicine for fluid and his heart now. How long has he probably had this problem? He's a small Maltese Mix about 12-14 and has anxiety but acts in good health. I'm just worried. Thanks In Advance!

2 Answers

Most Helpful Answer

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Answered By Lindsey Edwards MVB, BSc, IVCA

Veterinarian

Published on June 5th, 2017

There is no way of knowing how long this may have been developing but it is quite likely the condition developed in line with the worsening cough and breathless signs. Tracheal disease is common in this breed also and it is not unusual for both conditions to develop in the same dog, weakness and coughing at rest is generally considered indicative of a worsening heart condition which requires ongoing medical management to reduce symptoms and delay progression

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1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Lindsey Edwards MVB, BSc, IVCA

    Veterinarian

    Published on June 5th, 2017

    There are many causes for coughing including tracheal disease and bronchitis and it is unlikely the heart condition was present initially. It is possible it has been progressing as the cough has worsened but there is no way of predicting the timeline

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    1Pet Parents found this answer helpful

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