The King Courser is an extinct breed of dog that was popular in medieval England. It was renowned for its speed, agility, and stamina, and was utilized in hunting and coursing games. The King Courser was typically characterized by its long legs and slender build, making it well-suited for chasing down hares and other small prey. King Coursers were highly prized by noblemen and royalty and were often used as a display of status.