This rock band formed in 2002 in the city of Madrid with the union of several musicians from different formations of national renown, with Bull (Diego Avello,) as the "frontman" and singer of the band.

Bull was born in Cangas del Narcea, Asturias, forming his first band in the same locality. With the name of Dalton Rockers toured the north of Spain performing numerous concerts. Later, with Bull as vocalist andl Jorge Martinez (Ilegales) on guitar, as "Profetas" band that takes part in different festivals. The training ends after recording an LP that never see the light. Bull later rescued some of the issues to the repertoire of "Bull y Los Búfalos" and edited by Jorge Martinez, the complete list of songs with his band "Ilegales".

After leaving "Profetas", Bull decided to move to Madrid. Once in the capital, the singer Asturian 2.00 meters high, record the music video "Heroe de los gatos" and create "Bull y Los Búfalos" with Antonio Berdiales "Berdi" as a guitar player, Javier Cano (bass player for "La Guardia") and Rodrigo Lopez drums. With this training wheels for various Spanish stages, while writing several songs together.

In 2007 the band changed completely all musicians, and go to swell their ranks, Oscar Varela on drums, Raul Bustillo "Dr. Maybe" as a guitarist and Jose Mora on bass. At that time the band finishes recording their first LP "Quién dijo miedo...?". The recording is performed with both bands, current and founding musicians. The album contains 8 tracks of his own composition (lyrics: Bull, music: Bull and Berdi) and two versions, one of Elvis Presley "paralyzed" and "Riot goin on" . Some of the topics on the LP, as "Mexico" or "Cafeína y RnR" have been published in Mexico in two compilations of Rock with other groups in Los Angeles and various Mexican cities Bull and buffalo as guest artists.

The album, entirely self-produced, goes on sale on October 15, 2009 under the label "Circular Music", which performs the work of publishing and distribution in stores and online. The presentation of it is held in the Madrid Room "La Sal."

After recording the video clip of one of the singles from the album "Alguien mejor que yo" begins an intensive tour of many cities and small towns of the country. Tour operated by members of the band with the collaboration of Jaime Ortueta.

Without a doubt, is in alive the best site for this band. Halfway through the Tour, Javier Cano (bass player for "La Guardia") who had returned to the band for this tour, is replaced by Javier Sane, current bassist of the band. In this Tour, participate as collaborators, guitarist Nico Álvarez "La Frontera" and Igor Paskual, guitarist of "Loquillo y Los Trogloditas"

After finishing the tour in the winter of 2010, despite a "little" promotion, the group recorded a considerable number of LPs sold and rave reviews both in print and digital, the group decides to continue feeding the hot streak and start a new composition stage for a future edition of a second LP.

At this time Bull y los Bufalos are about to enter a recording studio LP will again be mentioned that self-produced by the same band. Lp which will feature 7 new songs self-composed (Lyrics: Bull, R. Bustillo music) two versions and a topic with Carlos Segarra "Rebels" and Igor Paskual.

By this time, the band have just recorded their second album, an album with a great sound and a Southernrock production, introducing Pedal Steel, Dobro, harmonica etc ... The LP consists of 7 self-composed themes, 2 versions and a track with Carlos Segarra from "Los Rebeldes" and Igor Paskual from "Loquillo y Los Trogloditas"

The album was mixed in Los Angeles, USA at the hands of Alberto Sanchez and mastered in New York by Vlado Meller(Rolling Stones, Red hot chilli peppers, Kid Rock, Michael Jackson…), one of the best mastered the moment. The first single of the album "A pleno pulmón" has recorded an excellent music video directed by Juan Gama de Cossío.

After the lp recording, Bull has just moved to Mexico where he is preparing the album release. At this moment the band is in Mexico City, making radio and television promotion and playing live and preparing the album's release in April