Gorilla skin is significantly tougher than human skin. It is about two to three times tougher, being thicker, more fibrous, and less sensitive. The lower layer of their skin, the dermis, is densely packed with collagen fibers, which makes it highly resistant to cuts, scratches, and impacts from thorns, branches, and bites from predators like leopards. This toughness helps prevent serious injury during fights with other gorillas and also provides a barrier against parasites and insect bites
. In addition to tough skin, gorillas have thicker bones-about 1.5 to 3 times thicker and denser than human bones relative to body size-and extremely dense muscles with a higher percentage of fast-twitch fibers, which contribute to their overall durability and strength
. Overall, gorilla skin and skeletal structure make them very resilient animals, capable of withstanding significant physical trauma that would injure humans easily
