I found this today and thought it was interesting since it was posted a couple years ago. I like information that makes us think about ingredients and their role in your pets food. Having been in business since 2005 I have seen the rise of grain free and a total shift in the pet food marketplace. As always I believe in a holistic approach to your dogs care so the no soy aspect/legume really had me thinking. Give it a read see what you think.
https://www.natureslogic.com/2018/08/24/have-we-come-full-circle-and-is-it-ok-a-little-food-for-thought/