Your senior dog food should have a higher fiber count as well because a lot of older dogs deal with constipation and a high fiber diet can help to eliminate this. (puppywire.com)
All you need is a source of information that gives the carbohydrate and fiber counts in grams of specific portions of foods. (ketogenic-diet-resource.com)
Fiber counts as carbs and is taken into account when calculating calories. (8fit.com)