"On Halloween, the cow says BOO. / She likes that word. It's something new." Revamping her 1982 classic Moo, Baa, La La La!, Sandra Boynton tells a wry tale of the gentle cow as she ventures out into the moonlit night, trying to discover who it was that replied to her "Boo" with a "baa." While the cow starts to worry herself unnecessarily, prereaders will only see the humor of her confusion, thanks in part to Boynton's tongue-in-cheek cartoons.