In Spain, there are many examples of dragons as heraldic symbols (particularly “dragantes”: two opposing dragon faces biting some figure). Dragons were introduced as heraldic symbols by King Peter IV of Aragon, who used a dragon on his helmet to show that he was the king of Aragon, as a heraldic pun (Rei d'Aragón becoming Rei dragón; translating in English as "dragon king").
In Spain, there are many examples of dragons as heraldic symbols (particularly “dragantes”: two opposing dragon faces biting some figure). Dragons were introduced as heraldic symbols by King Peter IV of Aragon, who used a dragon on his helmet to show that he was the .king of Aragon, as a heraldic pun (Rei d'Aragón becoming Rei dragón; translating in English as "dragon king").