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My dog was sick and passed away suddenly. What caused her death?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Female | 11 years and 8 months old | 10 lbs

My Yorkshire terrier was sick and not eating for 2 days On the 2nd day my dogs left eye closed shut which worried me so I was taking her to the vet first thing the next morning but she sadly died during the night. What would be the possible cause of death?? Thank you

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on June 19th, 2019

Hello. I am so sorry for your loss. You must be heartbroken. There are so many things that could have lead to Fifi's death, including infection, inflammation, organ failure ( kidneys, heart ), heartworm disease, & cancer. It does not sound like she was in any pain or discomfort, so it sounds like she passed quietly. Without a necropsy, an exact cause will never be known, just be glad she did not suffer. Please accept my condolences on your loss & thanks for using Petco Pet Education Center, formerly Petcoach.

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