Siouan languages
Siouan languages can be grouped into the Western Siouan languages and Catawban languages. The Western Siouan languages can be divided into Missouri River languages (such as Crow and Hidatsa), Mandan, Mississippi River languages (such as Dakotan, Chiwere-Winnebago, and Dhegihan languages), and Ohio Valley Siouan branches. The Catawban languages consist only of Catawban and Woccon.
Bidayuh
The Serian Bidayuhs have a distinct dialect known as the "Bukar & Sadong language" Bidayuh, which is not intelligible to Bidayuhs from other Districts. Here are some examples of the differences in the various dialects spoken in Serian, with their English and Malay equivalents. Also included are two Philippine languages, Kapampangan and Tagalog: