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Dog not eating, acting strange, fever after vaccine. Is it a reaction?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | 10 years and 2 months old | 17 lbs

My 10 year old schnauzer poodle had vaccinations5 days ago. He has barely eaten since and is acting strange the past 2 days. It seems like he also may have a fever. Side effects from vaccine?

1 Answer

Most Helpful Answer

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Answered By Mirissa Duncil, DVM

Veterinarian

Published on July 2nd, 2017

Hi there. It sounds like Kozmo may have had a vaccine reaction. Usually the side effects wear off rather quickly if they aren't serious...if he continues to act strangely I would encourage you to take him in to see what's going on specifically-he may require bloodwork. Hope this helps!

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