Half-Tooth is a male Smilodon rescued from Early Pleistocene South America. Making his debut in the Series 3 episode "Saving the Sabre Tooth", Half-Tooth was the leader of his pride before being cast out by two rival Smilodon brothers wanting to take over his pride. Though they succeeded, one of the two brothers was killed and Half-Tooth reclaimed his crown. Following that, he and his pride were rescued and brought back to Prehistoric Earth.