Momotxorros and sheepers perform during the last day of the carnival. Altsasu (Basque Country). February 28, 2017. Momotxorros and sheepers are main characters on those ancient carnivals. The 'Momotxorros’ are some wild beasts, harassing and sparking everyone who is on they way, and the sheepers the ones that have to keep them. The origin of the 'Momotxorros' is unknown. This ancient character disappeared in the 1930s, and was recovered in 1990. (Gari Garaialde / Bostok Photo)