Our dog had diarrhea yesterday, and I spent all morning trying to find the perfect combination of human foods that he would eat and that would actually help to firm up his stools. I finally found it!... Here's the recipe that cured my dog's diarrhea in a matter of hours. Of all the dog diarrhea treatments and bland dog food recipes I've tried, this one cures diarrhea in dogs the quickest. Plus a list of human foods to keep on hand so you'll be ready whenever diarrhea strikes!