How do you get the kings seal on Dark Souls 2?

In Dark Souls 2, you obtain the King's Seal by defeating the boss known as the "King's Pet," which is located in the area called the "Memory of Jeigh." After defeating him, you will receive the King's Seal as a reward. This item is essential for accessing certain areas in the game and unlocking specific content related to the Kings. Be sure to explore thoroughly and engage with the game's lore to fully understand its significance.