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    Pancreatic insufficiency may first be noted in puppies. These puppies are unable to properly digest foods because they are lacking certain enzymes. They tend to be thin and undersized, but their abdomen may be bloated. Diarrhea is common, and the stools may be light in color, soft, abnormally smelly and greasy. Puppies with this condition often have a lot of gas. Your veterinarian can make a diagnosis and can prescribe an enzyme supplement to be given with meals. A special diet may also be suggested.