What historical animal sculptures pioneered the use of wrought iron as a primary artistic medium?

Wrought iron, known for its durability and malleability, became a groundbreaking medium for artistic expression in animal sculptures during the late Middle Ages and Renaissance. Among the earliest examples are the intricate ironwork creatures adorning European cathedrals, such as the legendary iron dragon of Rouen Cathedral (15th century) and the mythical beasts on Notre-Dame's gates. These works demonstrated iron's potential beyond functional use, blending craftsmanship with artistic vision. Spanish ironworkers later elevated the form with detailed equestrian statues, while German metal artisans created striking heraldic animals for castles. These pioneering sculptures laid the foundation for wrought iron's enduring role in decorative and monumental art, transforming blacksmithing into a respected artistic discipline.