The tribes of India display a wide variety of economic systems that have evolved according to their geographical environment, natural resources, historical conditions, and interaction with neighboring communities. Economic classification of tribes refers to grouping them on the basis of their principal means of livelihood. Though many tribes today follow mixed occupations due to modernization and development, they can broadly be classified into several categories. The first category consists of food gatherers and hunters. These tribes depend mainly on forests for their livelihood. They collect roots, fruits, honey, tubers, medicinal plants, bamboo, and other forest products. Hunting of wild animals, fishing, and trapping birds also form part of their traditional economy. Their technology is simple, and production is mainly for subsistence rather than for the market. Tribes such as the Birhor, Chenchu, Kadar, and Paliyan are examples of this economic type. Their life is closely associated with forests, and seasonal availability of resources determines their economic activities. The second category includes pastoral tribes. These tribes primarily depend on the rearing of domesticated animals such as cattle, sheep, goats, buffaloes, yaks, or camels. Livestock provides milk, meat, wool, hides, and transportation. Pastoral tribes often migrate seasonally in search of grazing lands and water. The Toda