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Why is my puppy not eating or chewing after his vaccinations?

Updated On September 23rd, 2025

Pet's info: Dog | Boston Terrier | Male | unneutered | 3 months and 22 days old | 8.33 lbs

My Boston Terrier is 4 months. He recently after his vaccinations distemper and parvo started to drink what appears to be excess water and is not eating. He is still active. He is sleeping alot and he seems to be having some trouble chewing. Its like the kibble is in his cheeks vs his mouth.

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on March 11th, 2018

Hello. It is possible that the vaccinations are causing his difficulties. The effects of the vaccines should subside in another 24-48 hours. Try feeding him some plain cooked chicken, or even a couple of jars of pureed jarred baby food, like the turkey or chicken. If Harvey is not feeling any better in a couple of days, please contact your veterinarian. It is possible he was incubating something previous to the vaccines, or he needs more professional treatment from having a reaction to the vaccines. Regardless, I hope he is feeling better soon. Thanks for using Petco Pet Education Center, formerly Petcoach.

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