Grain free diets are all the rage amongst health conscious humans at the moment. The justification is that when the human race was evolving, we ate a diet of meat and the occasional vegetable or fruit.
The Evolution of Dogs
A similar argument can be made for dogs. Wild dogs also evolved while eating meat and some vegetables, without much in the way of grains. Dogs are naturally carnivores, and if left to their own devices will eat a diet containing little if any grain. Many pet owners are starting to wonder whether they should switch their dogs to a grain free diet. To meet this increased level of interest, dog food manufacturers are producing both dry foods and canned foods that contain no grains at all.