My 12-year-old mixed breed rescue has suddenly developed some digestive issues. My vet suggested grain-free, chicken and beef-free formulas, with the caution that we use a dog food that does NOT have legumes (lentils, peas etc). There is confirmed research these ingredients can cause heart issues in dogs — on the increase since dog food producers have used legumes heavily in grain-free formulas. I noticed in your recent newsletter that the recommendations in “best dog food for allergies” almost all included legumes. Can you do a review article on best dog food for allergies that do NOT include legumes? Thanks.