Hi, I'm hoping like heck that someone has experienced this. 8 weeks ago, my highly active 7 yr. old GSD, Gunnar, got diarrhea very badly after eating. I took him off solid foods for 48 hours, then introduced it back in a little at a time, dry food, always, Canidae Pure Salmon. He is "no grain" and NO people food. It ran right through him. The vet put him on antibiotics and probiotics, for 10 days, in case it was a tummy bug. Changed his meals to long grain rice/eggs/yogurt at their suggestion. He got better. Tried, a little at a time, to swap the eggs for his dry food, right back to the runs. Dried him out again, tried a different dry food. No good. I've spent over $500 in tests so far, they can't find anything. They did a fecal test, that came back clean. They checked for pancreatic problems, did the Panacure sprinkle for 3 days to rid him of any parasites, that all came back clean. Ran a few other tests, nothing is coming back positive. I don't mind cooking rice and eggs, but am concerned about 6 eggs per day/7 days per week. Can dogs get cholesterol? This past week, I swapped the eggs for some VERY good, tummy sensitive canned food. It ripped through him. Took him off that. went back to eggs for 3 days, nice and solid. Tried cooked ground beef, it ran right out of him. Does anyone know what this could be, or what other things he should be tested for?? I have 3 qualified vets at my disposal and they are stumped!! Please help!!!