Each happy farm animal "sounds off" in its own voice when its animal puzzle piece is placed correctly in this eight-piece wooden peg puzzle! Your child will enjoy hearing all eight sounds and looking at the full-color, matching pictures under the pieces, while developing matching and listening skills with this captivating multisensory puzzle.50% plywood (pieces and the rest board), 30% MDF (the sides of the rest board), 15% plastic (wire coatings, battery compartment, pegs, speaker, sensors), 5% metal (magnet, peg tacks, wires, springs in the battery compartment)AAA Batteries Not Included, 8-piece wooden peg puzzle with sturdy wooden puzzle boardFull-color matching picture under each pieceEye- and ear-catching puzzle enhances matching and listening skills.Aural reinforcement helps children play independently.2 AAA batteries not included