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Updated on September 23rd, 2025
Pet's info: Dog | French Bulldog | Female | unspayed | 3 months and 1 day old | 7 lbs
My 3 month old puppy passed away at the vet office. She went in for chest X-rays as she was showing difficulty signs in breathing. Shortly after the vet informs she had suffered a heart attack. He later showed the xrays that showed an enlarged heart. Shortly after he informed she had passed away. Could this have been prevented? Is this negligence from the vet office that caused her to have a heart attack?
2 Answers

Answered By Linda G, MS, DVM
Veterinarian
Published on February 7th, 2020
Answered By Dr. Elizabeth
Veterinarian
I'm sorry to hear this happened. Enlarged hearts commonly present as trouble breathing. By the time this clinical symptom shows up, the condition is already very advanced and the heart is very diseased. Unfortunately there is not much you can do once the process is advanced. I cannot speak for your veterinarian but as a rule, we are trained to handle very sick and fragile patients but we cannot save all of them. If you have questions, you may ask your veterinarian about their protocols for fragile heart patients.
In a young puppy, the heart enlargement is most likely congenital and severely affected puppies don't commonly survive into adulthood. I recommend to ask your veterinarian about their clinical impression. You should also let the breeder know. Some heart conditions are genetic and there may be screening available to prevent this from happening to another pup.
My condolences on the loss of your puppy. It's always hard to lose a pet and especially hard when they are so young.
Please feel free to post any additional questions.
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