My sister's dog is staying with us for the weekend. I've mentioned her before. She's the German Shepherd mix. She has been really gassy (flatulence) for about two weeks. She was experiencing some diarrhea, too. They did some tests and everything came out okay. They have added yogurt to her diet to help her digestion The diarrhea seems to be gone, but the flatulence is not. My sister said she was better, but she was only with us an hour yesterday when she started in. I'm beginning to think it's more due to stress than diet. She is 11 years old and is the one that has seizures (she's on medication for that). While she has no reason to be nervous here, she has been here over night many times, I think maybe as she gets older she does not like being away from her family and home. Has anyone experienced this with their dog? If so, did you find a remedy? Is this more common in older dogs?