The document provides information about Neanderthals, including their tools, habitat, anatomy, and possible causes of extinction. It describes Neanderthals as living in cold areas of Europe and Asia between 350,000-500,000 years ago. They made tools from flint and stone for hunting and cutting. Neanderthals had short limbs, a wide rib cage, and smaller brains than humans. They likely communicated minimally but also made simple art and buried their dead children, indicating emotional complexity. While primarily scavengers, they could kill large animals. Competition with modern humans is theorized to have driven Neanderthals to extinction.