We have an 18 month German shorthair female. About a month ago, after being in a pet resort for a couple of times, now has mustard colored stool and very soft. We took to vet, no parasites, worms, etc. Put her on a gastro dry food and antibiotic and a floraforti powder on food - it seemed to help somewhat the first couple of days but still not all normal. We then put her on hamburger, white rice, and cottage cheese for a week - stool was part brown and part mustard colored. She acts healthy, lots of energy, same behavior etc, nothing changed there, strong, eats very good and lots of water. I put her back on the gastro type of food, and have given her some non-fat plain yogurt. She is still showing very soft and mustard stools. We had given her some table scraps prior to the month that we went on vacation. I am not sure what it could be or what to do. I have talked to a couple of vets and the one suggested the hamburger combo, said it might have been her previous food (Eukanuba) which she had been on since a pup and then we changed to the adullt level. Can you give me any suggestions as to what this could be or what to do next on this. She had normal stools all the way up to a month ago.