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My dog won't eat or drink and is suddenly very tired. Is he sick?

Updated on September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Male | neutered | 10 years and 8 months old | 21 lbs

so last couple pf days, my dog wont eat or drink. he just wants to lie down. when I mention park he usually jumps up and runs around. now he wont even budge im really worried

1 Answer

Most Helpful Answer

Linda G,  MS, DVM

Answered By Linda G, MS, DVM

Veterinarian

Published on May 21st, 2019

Hello. In an older dog, lethargy can be due to infection, inflammation, arthritis, immune dysfunction or even cancer. You do need to have Mylo seen by your veterinarian so the appropriate tests can be conducted & correct treatments started to have Mylo up & running around again soon. Thanks for using Petco Pet Education Center, formerly Petcoach.
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