The second axis of Dog Raw Food segmentation classifies products by protein source, typically grouped into beef, chicken, turkey, lamb, fish, and mixed‑protein blends. Beef‑based formulas dominate the premium tier, contributing approximately 30 % of volume, because of their high iron content and consumer perception of robust muscle development. Chicken accounts for roughly 25 % and is favored for its digestibility and lower cost of raw material, which sustains price‑competitive offerings. Turkey, representing about 12 %, fills a niche for owners seeking leaner profiles while maintaining essential amino acids. Lamb, at 10 %, appeals to allergy‑sensitive dogs due to its novel protein status, driving incremental growth in specialty channels. Fish, comprising 8 %, is valued for omega‑3 fatty acids but limited by supply chain volatility, influencing its modest market share. Mixed‑protein blends, aggregating the remaining 15 %, provide formulation flexibility and enable manufacturers to balance cost, palatability, and nutritional completeness. Each type’s share reflects both raw material economics and targeted consumer health narratives, shaping the overall market composition.