First, keep in mind that your canine’s food is just as perishable as your own.
After you purchase your food, it is important to remember that, like a loaf of bread, just because it comes in a bag and has an expiration day a year or so long, does not mean it lasts on your home shelf for that long. The expiration is how long the food is good for BEFORE it is opened, while it is still in an oxygen barrier bag. As soon as you open the bag, the food is exposed to oxygen and begins to degrade. Natural foods do not contain heavy, toxic chemical preservatives and must be treated how you would treat your own natural foods.