Redbarn's Protein Puffs are an innovative, tasty, and healthy treat for dogs! Our cheese flavored Protein Puffs are packed with protein derived from human-grade caseinate, commonly used in health supplements, snacks, protein bars, and diet products. Redbarn's Cheese protein Puffs for dogs offer a unique combination of protein, natural ingredients, and essential amino acids without any artificial preservatives, flavors, or colorings. Light and crispy, your dog will beg for more!.