Rhinoceros hide is a thick, tough and durable material that has been used for centuries in the manufacture of leather goods, armor and other items. However, due to the declining population of rhinoceros, alternatives to rhino hide are now being sought. Some of the synonyms for rhinoceros hide include elephant hide, buffalo hide, cowhide, pigskin, goat leather, and sheepskin. These materials are all strong, long-lasting and may be used for similar purposes as rhino hide. While they may not offer the same level of protection against bullets and knives, they are still worthwhile alternatives to consider. In addition, the use of these alternatives can help protect endangered species from further harm.