There are many arguments for and against adding corn into dog food. a positive of adding corn to dog food is that it makes dog food far more affordable than a kibble that is made mainly from meat.  At the same timethere is the negative side of including corn in dog food because corn lacks nutritional value.  Bottom line is just to provide the best food for your pup that is affordable for you.  It also might be a good idea to add some nutritional supplements to your dogs diet such as an omega 3 capsule to ensure that your dogs diet is nutritionally sound.