We all know the cost of dog food is rising. Keeping your best friend fed while on a budget can be a difficult task, no matter what type of food you buy. Unfortunately, keeping him or her fed in a healthy way is even harder; you often see headlines referring to poisonous batches of pet food, and even the large, less-expensive brands are filled with cheap fillers like whole grain corn and 'poultry by-product meal.'It doesn't have to be that way. You...