Canadian Brand. Boréal strives to make the best food for every dog, sourcing every possible ingredient from Canadian farms and fisheries. Boréal Proper Large Breed Chicken Meal Formula is an all-breed diet using Canadian chicken with a low glycemic base of pea and beans. This is a larger kibble size with reduced protein levels to help control the growth rate of larger breeds. Prebiotics are added to aid in digestion, taurine for a healthy heart, and unique organic minerals for deeper coat color and improved mobility.