Culann the smith invites Conchobar to a feast at his house. Before going, Conchobar goes to the playing field to watch the boys play hurling. He is so impressed by Sétanta's performance that he asks him to join him at the feast. Sétanta has a game to finish, but promises to follow the king later. But Conchobar forgets, and Culann lets loose his ferocious hound to protect his house. When Sétanta arrives, the enormous hound attacks him, but he kills it in self defence, in one version by smashing it against a standing stone, and in another by driving a sliotar (hurling ball) down its throat with his hurley. Culann is devastated by the loss of his hound, so Sétanta promises he will rear him a replacement, and until it is old enough to do the job, he himself will guard Culann's house. The druid Cathbad announces that his name henceforth will be "Cú Chulainn"—"Culann's Hound".