Caingua, Caiua, Caiwa, Cayua, Kaiova, Kaiowá, Kayova
18,000 (2003 ISA).
Mato Grosso do Sul, from the Apa, Dourados, and Ivinhema rivers in the north to the Mbarakaju mountains and tributaries of Jejui river in the south.
Vigorous. Young people shifting to Paraguayan Guarani [gug].
Literacy rate in L1: 5%–10%. Literacy rate in L2: 15%–25%. NT: 1986.