Babies and toddlers will love moving the sliders back and forth to see and hear all the jungle animals. Each time you move one of the sliders in this unique novelty book, a jungle animal springs into view and makes a fun sound. But there's more! Move the same slider back again, and you'll see and hear a completely different animal. From growling leopards to howling wolves, discover the world behind the trees in this exciting journey through the jungle. - Playful and interactive reading experience- Helps build fine motor skills and improves dexterity - Sliders are perfectly-sized for little hands - Includes on/off button to save battery life