The Types segmentation categorizes Pet Collagen Sticks by their collagen source and processing method, primarily into hydrolyzed collagen, marine collagen, and bovine collagen sticks. Hydrolyzed collagen, broken down into low‑molecular‑weight peptides, dominates the market because of its superior absorption and versatility across all application categories, representing approximately 55 % of product offerings. Marine collagen, derived from fish skin and scales, occupies about 25 % of the market; its high glycine content and perceived sustainability appeal to owners seeking premium, hypoallergenic options, especially for skin & coat applications. Bovine collagen, sourced from cattle hide, accounts for the remaining 20 % and is favored in joint health sticks due to its high type‑II collagen concentration, which directly supports cartilage repair. This market taxonomy of types illustrates how source differentiation drives formulation strategies, pricing tiers, and consumer preference, ultimately shaping the competitive landscape of the Pet Collagen Sticks sector.