Dorobo peoples
Dorobo (or Ndorobo, Wadorobo, dorobo, Torobo) is a derogatory umbrella term for several unrelated hunter-gatherer groups of Kenya and Tanzania. They comprised client groups to the Maasai and did not practice cattle pastoralism. Etymology

The term 'Dorobo' derives from the Maa expression il-tóróbò (singular ol-torróbònì) 'hunters; the ones without cattle'. Living from hunting wild animals implies being primitive, and being without cattle implies being very poor in the pastoralist Maa culture. Classifications
In the past it has been assumed that all Dorobo were of Southern Nilotic origin; accordingly, the term Dorobo was thought to denote several closely related ethnic groups. Groups that have been referred to as Dorobo include: 
Kaplelach Okiek and Kipchornwonek Okiek (Nilotic; Rift Valley Province, Kenya)
Sengwer
Mukogodo-Maasai (the former Yaaku, sometimes Aramanik) (Yaaku language; Laikipia District, Rift Valley Province, Kenya)
Aasax (Aasa language; northern Tanzania)
Akie (sometimes Mosíro, which is an Akie clan name) (Nilotic, northern Tanzania)
Mediak (Kalenjin, northern Tanzania)
Kisankasa (Kalenjin, northern Tanzania)
Aramanik (Kalenjin, Tanzania)
Mosiro (Kalenjin, Tanzania)
Omotik

Relations with neighbours
A historical survey of 17 Dorobo groups in northern Kenya found that they each maintained a close rapport with their surrounding territory through their foraging. Speaking the same language as their nomadic pastoralist neighbours, they would maintain peaceful relations with them and accepted a lower status. Occasional intermigration and intermarriage between the two groups was even possible. If the political landscape shifted and new pastoralists entered the area, then the local Dorobo would switch to the new language and build up new relations, while clinging to their territorial niche. See also
Dorobo language
Degere

Notes

References
Distefano, John A. (1990) 'Hunters or hunted? Towards a history of the Okiek of Kenya', History in Africa, 17, 47–57. Hobley, C.W. (1903) 'Notes concerning the Eldorobo of Mau, British East Africa', Man, 3, 33-34 (with a 100-item vocabulary on page 35). Hobley, C.W. (1905) 'Further Notes on the El Dorobo or Oggiek', Man, 5, 39–44. Hobley, C.W. (1906) 'Notes on the Dorobo People and other Tribes; gathered from Chief Karuri and others', Man, 6, 119–120. Huntingford, G.W.B. (1931) 'The Taturu, Mosiro, and Aramanik dialect of Dorobo', Man, 31, 226–228. Kenny, Michael G. (1981) 'Mirror in the forest: the Dorobo hunter-gatherers as an image of the other', Africa, 51, 1, 477–495. Maguire, R.A.J. (1948) 'Il-Torbo', Tanganyika Notes & Records, 25, 1–27. [reprint of a 1928 article published in the Royal African Society's Journal]
Rottland, Franz & Vossen, Rainer (1977) 'Grundlagen für eine Klärung des Dorobo-Problems', in Möhlig & Rottland & Heine (eds.) Zur Sprachgeschichte und Ethnohistorie in Afrika. Berlin: Dietrich Reimer, 213–238.