Weyto caste
The Weyto, also referred to as Wäyto, are thought to have been one of the Konso tribes that migrated to northern Ethiopia, assimilating through time as a caste among the dominant Amhara people. Their endogamous strata has existed in the hierarchical Amhara society, one of the largest ethnic groups found in Ethiopia and neighboring regions. Their hereditary occupation was hunting and leather work (tanning). The Weyto people are described in historical texts as a group of hippopotamus hunters in Ethiopia around Lake Tana, Lake Zwai and Bahir Dar. Due to their diet on hippopotamus meat, the Weyto have  been considered an outcast people and despised by Amhara and other ethnic groups. Enrico Cerulli linked them to two other outcast groups of Ethiopia with similar names and live primarily as hunters: the Watta or "Manjo" of the Gibe region and former Kingdom of Kaffa; and the Watta amongst the Borana people. Similar castes with hunting occupation live in other parts of the Horn of Africa, states Ephrem Tadesse, such as "the Watta among the Oromo, the Fuga or Mana among the Gurage, the Manjo among the Kaffa, the Kwegu among the Mursi/Bodi, the Hadicho among the Sidama, and  the Mijan and Yibir among the Somali". The Weyto have been a small part of more elaborate Amhara caste system, ranked higher than slaves in its social stratification system. According to Donald N. Levine, an Ethiopian Studies specialist, the caste system depended on: endogamy; hierarchical status; restraints on commensality; pollution concepts; traditional occupation; inherited caste membership. Scholars accept that there has been a rigid, endogamous and occupationally closed social stratification among Amhara and other Afro-Asiatic-speaking Ethiopian ethnic groups. However, some label it as an economically closed, endogamous class system or as occupational minorities, whereas others such as the  historian David Todd assert that this system can be unequivocally labelled as caste-based. The Weyto are reported to have once spoken a Weyto language, likely belonging to the Cushitic family. The language became extinct at some point in the 19th century. According to the 1994 national census, 1172 individuals were reported belonging to this ethnic group; it was not an ethnic choice in the 2007 census. The general term for hunter-gatherers in Ethiopia is "Wayṭo"/"Woyṭo" in Amharic ("Uoïto" in Italian records), "Watta" (pl. "Watto") in Oromo, "Fuga" in the Gurage, and "Manjō" ("Mangiò" in Italian records) in Kafa . At least one group is reported to have called themselves "Addō" or "Addoyē", though that may be the Oromo word for 'potters', another minority caste. Despite being lumped under common terms for hunter-gatherer, the Amharic-speaking "Wayṭo" of Lake Tana are a distinct people from the Kafa-speaking "Manjō" of the Keffa Zone, as well as from other "Wayṭo/Watta/Fuga" groups elsewhere in Ethiopia.