How Much Does it Cost to Feed Your Dog? This is an extremely easy guide to factoring the costs of [commercial] dog diets, as food varieties and dietary choices vary. It is important to appreciate the factors that can influence a dog owner’s choice of food to feed their pet when making a nutritional recommendation. Of which cost is one. The size and activity levels of the animal also dictate the amount of food consumed. The quality of the food may also affect the price, but this often preys on the emotions of the consumer, and it should be noted that “premiumization”, which actually began in the beverage/alcohol industry as a marketing term, does not stem from nutrition or support scientific evidence.