What is inside THIS box?

Monkey has a big box, which he tells Cake has a cat inside, but only when the box is closed; Cake suggest that maybe it is a dinosaur instead, and the two friends puzzle over how they can solve the problem of finding out what is in the box, if it is always empty when opened.

Main Author: Daywalt, Drew (Author)
Corporate Authors: Findaway World, LLC.
Other Authors: Tallec, Olivier (Illustrator), Mount, George (Narrator)
Format: Kits Kit Books Print Book Kit Audiobooks Kit
Language: English
Published: Solon, Ohio : Findaway World, LLC, [2021]
Series: Monkey & Cake book ; 1.
Subjects:
Summary: Monkey has a big box, which he tells Cake has a cat inside, but only when the box is closed; Cake suggest that maybe it is a dinosaur instead, and the two friends puzzle over how they can solve the problem of finding out what is in the box, if it is always empty when opened.
Item Description: Release date supplied by publisher.
Print book published: New York : Orchard Books, an imprint of Scholastic Inc., 2019.
Audiobook originally released by Scholastic.
Issued as a Wonderbook, a pre-loaded audiobook player permanently attached to a hardcover book.
Powered by a rechargeable battery ; USB charger required for recharging.
Audiobook player has 2 modes. Read-Along mode narrates the story. Learning mode asks questions related to the story.
Physical Description: 1 Wonderbook (1 volume (unpaged)) : color illustrations ; 24 cm.
Audience: Grades 1-4.
ISBN: 9781664998070