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My dog won't eat anything for 36 hours. When should I see a vet?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Male | neutered | 70 lbs

My dog will not eat. It's been 36 hrs

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1 Answer

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Answered By Jyothi Alagappan

Veterinarian

Published on June 3rd, 2018

Hi and thank you for using Petco Pet Education Center, formerly Petcoach! I am sorry that Bear has not been eating. Since it has been more than a day that Bear has not eaten, I recommend taking him to the vet. It could be anything from not liking his original food, to an upset stomach, to something more serious like pancreatitis, a foreign object, oral pain etc. Your vet can perform a full physical exam and decide if additional diagnostics are warranted at that time (blood work, fecal testing, radiographs). If Bear has any vomiting, diarrhea, or lethargy- I would recommend taking Bear in sooner to the vet.

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