My dog had heartworm. Why is she coughing, foaming, and tired?
Updated On September 23rd, 2025
Pet's info: Dog | American Staffordshire Terrier | Female | 40 lbs
My foster dog tested heartworm positive positive. She was treated and is on prevention twice a month. She is coughing do bad she is foaming out her mouth. Her nose is dry. Her breathing sounds like she is stuffy in her nose. She is also being very lazy. Is this normal?
2 Answers
Most Helpful Answer
Published on March 26th, 2017
I would be concerned about these signs even if they are related to heartworm disease, and would not consider this type of coughing as typical for a dog recovering from heartworm. If she seems to be having trouble breathing you should seek emergency veterinary care. A chest x-ray might be recommended depending on how Tess's chest sounds on physical exam.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on October 17th, 2019
Ideally, she should be rechecked by you veterinarian. The cough may be lingering effects from the heartworm infection or it could be something else (infection or inflammation). There is nothing over the counter you can safely give her. Always check with you rvet first before medicating a pet.
1Pet Parents found this answer helpful
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