The four sculptures, made of granite, represent quadrupeds identified as bulls or pigs.

The balance of opinion favours bulls: there are holes which have been interpreted as sockets for horns.

The Bulls of Guisando are examples of a type of ancient sculpture called verracos of which hundreds are known.

For instance, Miguel de Cervantes references them several times throughout his novel Don Quixote.

[1] Federico García Lorca uses their symbolic value in his Llanto por la muerte de Ignacio Sánchez Mejías: The bulls are protected in Spain's heritage listings as a Bien de Interés Cultural (Property of Cultural Interest), being classified as a Sitio histórico or historic site.