Our Jumbo Bully Stick Stuffed Collagen Sticks combine dogs’ two favorite flavors to create the ultimate chew full of indulgent enrichment. Dogs will delight in two textures offering loads of mental stimulation. They’re also packed with protein and collagen for well-rounded skin, coat, joint, and muscle support. Extra thick nature provides dogs with an ultra-long-lasting chew experience and endless entertainment. Formulated with all-natural, limited ingredients from grass-fed, free-range beef that’s free of chemicals, hormones, and antibiotics. Perfect for hard chewers.