Although it is now a domestic species the llama's historical range included much of the Andes Mountains of South America. Domesticated by the Incas nearly 5000 years ago, this species has long been used as a beast of burden and a food source. In addition, humans have utilized the llama's wool for clothing, its hide for leather and its droppings for fuel. The llama is a member of the Camelidae family. Llamas, like their wild cousins the guanaco, alpaca and vicuna, are herbivores.