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Why does my dog get diarrhea when I try to feed him kibble?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 62 lbs

9 1/2 month old dog, loose stool for over 2 weeks. Fecal sample negative. Did 10 days of Metronidozole plus only chicken and rice. No improvement. Course of panacur, then switched for boiled beef and rice. Perfect poop for 3 days. Introduced 1/4 cup kibble and went right back to mush then mushy/liquidy. Could it be the brand of food (the 1/4 cup introduced was beef, grain free Merrick, since hedid well on the boiled beef. Vet is not helping. Any Suggestions?

1 Answer

Most Helpful Answer

Angel Alvarado, LVT

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on August 15th, 2018

It could be the brand of food or it could be the individual bag of food. Fast him for 24 hours then feed a bland diet in small, frequent amounts. Begin with 1 tablespoon every hour and gradually increase the amount. Feed bland until the stool is totally normal then transition slowly to the regular diet. Transition over 7-10 days. Consider a veterinary probiotic to promote a healthy gut. Brands include Bene-Bac, ProViable, ProStora or FortiFlora.
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