Question: The animated character who later used the slogan "The one and only cereal that comes in the shape of animals" to promote Crispy Critters was originally created to promote which cereal?
Sentence (from "Crispy Critters"): The sweetened cereal, made of oats, consisted of animal-shaped pieces akin to animal crackers. Television commercials featured a cartoon lion, Linus the Lionhearted, voiced by Sheldon Leonard, with the slogan "The one and only cereal that comes in the shape of animals," sung to the tune of "Trepak" from Tchaikovsky's "The Nutcracker" ballet.
Relevant evidence: Yes