Usborne slider sound books

Woof!: Move the sliders back and forth in this delightful sound book to see and hear the world of dogs and cats come to life. From barking and meowing to guzzling dinner and splashing in puddles, there are eight different lively pets to discover. Each slider makes one sound when you move it one way and a completely different sound when you move it back again, creating a unique and exciting surprise for babies and toddlers.

Roarr!: 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. Babies and toddlers will love moving the sliders back and forth to enjoy all the jungle animals in this delightfully illustrated book - the first in an exciting new series.