Orijen Regional Red Dry Dog Food 4.5 Pound Bag - Made in the USA. Orijen Regional Red Dry Dog Food 13 Pound Bag - Made in the USA. Dogs evolved as hunters – the structure of their teeth, jaws and digestive system scientifically classifies them as carnivores, evolved to eat a meat-based diet. They require high concentrations of meat, high inclusions of fresh meat, and a rich diversity of meat.In nature there are no synthetic supplements, so dogs and wolves derive their complete nutritional needs naturally, by consuming whole prey animals. Made with richly nourishing ratios of fresh meats, organs, cartilage and fresh whole fish, ORIJEN provides a concentrated source of virtually every nutrient your dog needs to thrive, naturally, without long lists of synthetic supplements, so only zinc is added.