Monstrous,100% Ostrich Bone is reknown for its durabilty even against the toughest chewers! Non-splintering. Sourced directly from Free Roam South African Cape Ostrichs. Non-allergenic. These bones are sourced responsibly as a bi-product of sustainable human food systems and are never used for the sole purpose of pet treats. Approximately 10.5 to 11.5 inches in length.