I realize that this may be a specific dog issue but are Border's particularly sensitive to GI upset by ingesting raw bows or marrow. We just can't seem to give our border a raw bone without diarrhea occurring. He just had a bad episode after a veal knuckle. We thought it was marrow from leg bones but his stools had bits of gnawed bone so I am now thinking it is a physical reaction. I know how to treat him, I'm just wondering if this is a common problem with Borders.