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Why is my dog eating grass and pooping it out immediately for weeks?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 5 years and 3 months old | 112 lbs

Why is my dog eating grass and pooping it back out straight away, he’s been doing it for a couple of weeks it literally comes out within three or four mins after he’s ate it,

1 Answer

Most Helpful Answer

C. Rathjens, DVM

Answered By C. Rathjens, DVM

Veterinarian

Published on March 26th, 2019

This generally means a dog is nauseous for some reason - although some dogs just enjoy eating grass for unclear reasons (flavor, the dew on it, etc). I would recommend scheduling a check in with his vet for an exam and possibly blood work to make sure everything is looking ok. He might benefit from a probiotic to changing to a high fiber/easily digestible diet like Purina EN + Fiber Balence.
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