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My dog has a cough. Is it heartworm, and what does a heartworm cough sound like?

Updated On September 23rd, 2025

Pet's info: Dog | American Bulldog | Male | neutered | 76 lbs

When thinking that your dog has heartworm, would the cough be light or kinda hard? Also, would the cough be continuous or not happening often?

1 Answer

Most Helpful Answer

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Answered By Jyothi Alagappan

Veterinarian

Published on August 4th, 2018

Hi and thank you for using Petco Pet Education Center, formerly Petcoach. Unfortunately, there is no classic cough for a heartworm dog. A cough can be caused by a primary pulmonary disorder like inflammation of the lungs (bronchitis) or infection in the lungs (pneumonia, kennel cough, the flu) or a parasite (heartworms). A cough can also be caused by a primary heart disorder like congestive heart failure. If your pet has not been on heartworm prevention, it is possible it can be heartworms but if your pet has been to day cares, dog parks or around other dogs, it is possible it can be an infection. I recommend visiting your veterinarian to perform a full physical exam and determine if xrays are warranted or a heartworm test. And ultimately, if any treatments are needed. Good luck!

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