Listen To The Voices Of Eight Favorite Zoo Animals When The Puzzle Pieces Are Correctly Placed In The Puzzle Board! Each Animal Piece Has A Matching Full-Color Picture Beneath. Eye- And Ear-Catching Puzzle Enhances Matching And Listening Skills. (Tip: Puzzle Has Light-Activated Sensors; For Best Results, Expose The Sensor By Removing A Piece In A Brightly Lit Room, Then Make The Sound Play By Replacing The Piece In The Board.