Predators are physically distinguished from humans by their greater height, arthropod-like mandibles and long, hair-like appendages on their heads that are set into their skulls (popularly perceived as "dreadlocks"). Their bodies are resilient to damage, capable of recovering from multiple gunshot wounds[1][2] and radiation doses that would prove fatal to humans.[5] Their wounds do, however, require medical attention and they incorporate a portable surgical kit in their armor for this purpose. They are also capable of enduring excruciating pain.