Hi there- I know you posted this a while ago, but I just stumbled across this post. I had the same problem with my dog as a puppy. Unexplained chronic diarrhea, having to make a bowel movement several times per day (5+ per day!), etc. We went through tests (bacteria, parasite/amoeba, fungal) antibiotics, food changes, enteric support supplements- the whole gamut. The vet couldn’t figure it out…. He was put on a prescription diet for a short while and while it helped calm things down (with the combination of flagyl), it didn’t stop. Nothing worked until I switched my dog to raw food. Seriously- the bloody diarrhea, gastric upset, vomiting, etc., stopped within a few weeks. Maybe it’s worth a try for your dogs? I am lucky in that my vet is open to raw diets and she hasn’t said anything negative because it’s helped my dog. My dog simply cannot handle any kind of kibble, regardless of the make and recipe. Good luck to ya.
