Methods for maintaining or improving the gastrointestinal health of animals susceptible to or suffering from poor gastrointestinal health by administering to the animal a gastrointestinal health maintaining or improving amount of a food composition comprising from about 1 to about 20% carbohydrate; from about 3 to about 10% total dietary fiber, wherein the total dietary fiber contains from about 10 to about 40% soluble fiber and from about 90 to about 60% insoluble fiber; and from about 0.1 to about 10% omega-3 fatty acids; wherein the composition has a digestibility coefficient of at least 80. Generally, the compositions are administered to the animal to prevent or treat diarrhea or to improve stool quality. Further, the compositions may be administered in conjunction with one or more probiotics, prebiotics, anti-gastritis drugs, anti-enteritis drugs, or anti-diarrhea drugs, microbial exopolysaccharides, or combinations thereof to maintain or improve gastrointestinal health.