All horns are 100% ethically sourced from Indian (and other parts of Asia) domesticated livestock raised for human consumption (food). In India, they raise water buffalo and ox-like we (in the US) raise cows. They are used for food, leather goods, milk, etc. The horns are usually discarded or ground up and sold for use as fertilizer or feed while a very small percentage get to be made into unique crafts like drinking horns.