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My puppy has diarrhea, vomiting, and a fever. When to see a vet?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 3 months and 11 days old | 13 lbs

Hi, my god had a solid poop sometime during the night but then had a fully liquid bowel movement not too long ago. She was vomiting up a clear mucus 2 days ago and feels like she has a temperature now.

1 Answer

Most Helpful Answer

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Answered By Jeffrey Milner

Veterinarian

Published on September 2nd, 2017

Sorry to hear about Scout! Sounds like she isn't feeling great! A single episode of diarrhea isn't too much a big deal particularly in a young puppy. They can very easily get an upset tummy from one of a huge host of things, including dietary indiscretion, parasites, or a mild infection. If you think she might have a fever, try to obtain a temperature yourself using a regular rectal thermometer. Above 102.5 would be considered feverish. Assuming there is no fever, you should also check the gums for a nice pink color / moistness, and the skin's elasticity for evidence of reasonable hydration. As long as all of this seems pretty normal, there is no need to rush out to the vet. I would consider switching Scout to a bland diet for the two or three days, something such as boiled chicken / hamburger and rice before switching back to the puppy food gradually. If Scout does has a fever or any other more concerning clinical signs of illness, I would definitely have her checked out sooner than later. Things like parvovirus come to mind when you mention vomiting and diarrhea in such a young dog. Hope this helps and good luck!

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