Holiday in Melilla – Melilla Travel for What are the defining characteristics of a human being? Humans have developed technology. Humans make and employ tools and machines. But that is not an unqualified distinction. Other animals, such as elephants, many primates, and certain birds, use primitive tools, such as sticks, to get food or scratch themselves. Chimpanzees use rocks and bones as weapons, and certain ants have domesticated plants and animals for the production of their own food, excelling in the crafts of cultivating yeasts and fungi and farming and milking aphids. While other species may use tools, however, they do not actually make tools, certainly not complex tools or machines. The sophistication of human technology is unparalleled. Holiday in Melilla – Melilla Travel 2016.