Neanderthals, known as Homo neanderthalensis, lived in Eurasia between 200,000-30,000 years ago. They inhabited caves and used stone tools for hunting. Neanderthals had adaptations for cold climates like muscular bodies and broad chests. While they lacked modern human's ability for complex speech, Neanderthals still communicated and had a culture that included art and ornament making. The extinction of Neanderthals around 30,000 years ago may have been due to habitat loss rather than competition from modern humans.