Decoding Animal Skin for Engineering: Mechanical Function, Morphology, and Emerging Bioinspired Applications

Abstract Today, as man becoming more mechanized so the utilization of animals to his social connect is depleting and these animals are diminishing out of the society such as cow, sheep and goat. However, these are preferred in breeding for feedstock such as slaughterhouses who consider it for consumption rather than as part of the family member. Animal skin, as a dynamic and multifunctional biological interface that exhibits considerable morphological and functional diversity among terrestrial, aquatic, and avian species. This review analyzes the unique mechanical properties, surface morphologies, and functional behaviors of skin in many contexts, such as moisture regulation, thermal control, drag reduction, camouflage, and sensory perception. The review connects biological discoveries with bioinspired technologies like electronic skin, synthetic leather, and self-healing coatings by looking at scientific articles, patents, and commercial products. Advanced characterization techniques and 3D bioprinting have improved the ability to copy complex skin structures for use in medicine, industry, and the environment. The review shows that materials inspired by skin could help us use less plastic and cut carbon emissions, which would help the goals of the circular economy. In addition to this, the study emphasizes on translational work of raw material extracted from slaughterhouses into an useful product with Technology Readiness Level (TRL) understanding from end to end. Finally, this article concludes by identifying the gaps in current research and highlighting the potential future opportunities for multidisciplinary innovation based on the ideas of natural design.