The Discovery 39-Button Sound Book series brings interactive storytelling to life for toddlers with 39 embedded sound buttons that play corresponding sounds, animal noises, and effects as little ones follow along with the story. Each hardback board book is designed for young children under 3 years old, encouraging early literacy and auditory learning through hands-on engagement.

Sold at Costco as an assortment of various titles, the series includes books such as Animals All Around, Moo, Quack, Baa! (a noisy day on the farm from rooster to cricket), and Roar with the Dinosaurs!, all authored by Courtney Acampora and Grace Baranowski and published by Simon & Schuster in partnership with the Discovery brand. Each title features vivid illustrations and a sturdy construction suited for small hands.