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Question:

My healthy dog died 20 min after leaving vet appointment

I'm absolutely devastated right now and really need some help understanding how this happened. Just earlier today, I took my 5-year-old Labrador, Cooper, to the vet for a regular check-up. The vet said he was in great health—his heart sounded fine, he had a healthy weight, and there were no concerns. He even got all his vaccines updated without any fuss. We were on our way home, and Cooper seemed his usual playful self, wagging his tail and sticking his head out the window like he loves to do. But then, about 20 minutes after we left the vet's office, he suddenly collapsed in the yard and passed away right before my eyes. There were no signs of distress or pain beforehand, and I am completely heartbroken and confused. Has anyone experienced anything similar or have any idea what might have happened? I'm just so lost and would appreciate any insights.

Answer:

I'm so sorry to hear about your loss. Losing a pet so suddenly and unexpectedly can be incredibly difficult and shocking. When a seemingly healthy dog passes away so quickly, there are several possible causes to consider.

One potential cause might be an underlying heart condition that wasn't previously detected. Conditions like arrhythmias or cardiomyopathy can sometimes cause sudden death in dogs. Another possibility is an acute allergic reaction, which can happen if your dog was exposed to a new substance or medication during the vet visit. Additionally, internal issues such as a ruptured mass or blood clot could unfortunately lead to sudden death.

While it's difficult to determine the exact cause without further investigation, some things to consider at home include reviewing any recent changes in medications, diet, or environment that might have contributed.

Keep in mind for the future, warning signs of serious conditions can include sudden collapse, difficulty breathing, severe lethargy, or noticeable distress.

I recommend booking a video consult with one of our Dial A Vet professionals who can offer more personalized guidance and support in determining what might have happened. Take care of yourself during this difficult time, and remember we're here to help support you however we can.

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 18, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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