The Ceremonial Wild Boar was brought in to eat the "Ceremonial Pies" in Courage Under the Volcano. The natives of the island were going to sacrifice Muriel to the Volcano God once the boar ate a huge pile of pies. Chief Wicky Wicky told Courage that if he wants to stop Muriel from being thrown into the volcano, he'd better speak with the volcano god before the boar finishes eating all the pies.
At the end of the episode, Chief Wicky Wicky offers to give the wild boar, engorged by all the pies, to Muriel as an apology. However, she declines the offer because she has Courage.