Octava Ganadera de San Antonio Abad Activity · La Matanza de Acentejo, Tenerife - Acentejo, Santa Cruz de Tenerife Image of La Matanza de Acentejo, not of the place itself. A livestock festival considered the oldest on Tenerife, held around the Santuario de San Antonio Abad on 17 January, the feast day of the patron saint of animals; decorated carts from all over the island converge on the second Sunday of the festivities so that livestock can receive the saint's blessing. 17 de enero Photo: Koppchen (CC BY 3.0) What to see and do in La Matanza de Acentejo