Our Colgn chews are made of 100% all natural water buffalo cheek! Water buffalo cheek is the bottom layer of skin taken from the shoulder to neck portion of the water buffalo hide. This skin is rich in collagen making it a great healthy chew for your furry friend. The collagen rich skin is also where this pawsome chew gets its name! Sourced from Water Buffalo all over India, we bring you QT Dog’s latest and greatest all natural chew line we know your dog will adore: Colgn!