The Carabao festival is held in the Philippines during the feast of of San Isidro Labrador (St. Isidore the Worker). The festival is organized on the 15th and 16th of May. The most famous festivals are those held in towns of San Isidro (province of Nueva Ecija), Pulilan (province of Bulacan) and Angono (province of Rizal). Carabao festival is held in honour of carabao (kalabaw) or water buffalo. The carabao is the national animal of the Philippines.