The cuíca is an idiophone and friction membranophone instrument, also known as the tambor-onça, omelê, socador, roncador, porca orpuita (a word from the Bantu language: mpwita or kpwita). It was introduced in Medieval Europe by the Arabs and was known as the sarronca in Spain.
It is shaped like a small drum. Attached to its interior wooden rod is a layer of skin which, when rubbed with a damp cloth, produces a sound similar to that made by a pig. The cuíca became famous in popular Brazilian music for being an essential part of samba music in the Río de Janeiro area, giving this genre a characteristic sound that often seems as though someone were making ironic and irreverent musical comments.
It is used in several oral Afro-Brazilian musical genres, such as maracatu and baque solto.