What are the advantages of grain free dog food?

I plan on feeding my dog Canidae grain free dog food. Grains are not readily digestible to dogs. Grain free is good because it is easier on their digestive system. It is also good for dogs with allergies to grains. Higher quality foods may still contain grains, but...

Why do people feed grain free dog food?

I’m trying to switch my dog food for my Katahula and I found this grain free diet stuff…what’s the difference? A lot of people are saying that dog’s don’t digest grain well and that it is not really necessary in their diets. If a food...