Why vegetables in the diet? The philosophy is that domestic pets should be getting their carbohydrate in a similar manner and balance to their wild ancestors. That means feeding fresh, raw (non-starchy and low glycaemic) vegetables (and some fruit). The green vegetables contain only small amounts of starch and some simple sugars. More importantly they are chock full of enzymes, nutraceuticals (supplements and functional foods), phytochemicals, antioxidants, vitamins, minerals and essential fatty acids.