A rejoneo is a type of bullfighting where the main bullfighter performs his/her ‘fight’ against the bull on a horse. The use of horses also occurs in other types of bullfights, such as the typical corridas de toros (where padded horses are briefly used by the picador) or the Portuguese-style bullfight also known as touradas (where the main bullfighter ‘fights’ the bull on a horse, although he/she does not kill him), but the rejoneo itself is different. Rejoneadores - the matadores performing in rejoneos - are dressed differently, normally with a short jacket and an Andalusian hat.

For all intent and purposes the rejoneo is pretty much the same as a corrida de toros, but everything the matador does on foot during a corrida de toros, he/she does it on horse during rejoneos. He/she also makes the bull run to exhaust him, but this time instead of teasing it with the capote or the muleta he/she does it with the horse (which is specially trained to avoid the charges of the bull, and therefore wears no armour or padding, and is replaced by a 'fresh horse' every few minutes).

Instead of the pica (lance), a special banderilla called rejón de castigo ('dagger of punishment') is stabbed in the bull's back, close to the neck. This is done to produce pain, to cut his muscles, and to produce blood loss. This dagger remains deeply stuck in the bull's back during the rest of the fight.