I have an 11week old standard poodle who’s had diarrhea since we brought him home. Vet said he had hookworms so we treated that hoping it would clear up GI issues but he’s still having problems and now on Flagyl and probiotic. Still noticing less than desirable movements. I’m wondering if it could be his food?? He’s on Purina Pro Plan Puppy as directed by the breeder! Need help problem solving! Could this be food related???