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My old cat is sick, vomiting after being lost; vet can't find cause?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Female | spayed

My 15 year old cat went missing then reappeared three days later looking very weak and almost dead. We took her to the vet and they gave her an IV which made her slightly better but every time she tries to eat or even drink water she throws it up immediately. The vet can't find the source of the problem and if we don't get her to eat soon we might have to make a hard decision. What could be wrong?

1 Answer

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on July 21st, 2018

Hi there. It would help to know if any testing was done by your vet, such as blood work or x-rays, and if so what the results were. Without that information, it's really impossible to say what might be wrong. She may have ingested something toxic, or eaten something that has caused an intestinal blockage. She could also have some type of chronic health issue such as liver or kidney disease, diabetes, hyperthyroidism, or even some type of cancer that was made worse by being lost and dehydrated for three days. If you have more information about test results from your vet, feel free to post again. Otherwise, I would recommend taking her back to the vet for some additional diagnostics (blood work, x-rays, possible abdominal ultrasound, etc.) to help determine what's wrong.

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