Melissa & Doug Sound Puzzle PetEight favorite pets are waiting to "speak" to your child! Place a puzzle piece into the puzzle board well with the matching picture, and hear the animal meow, woof or tweet! This 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.)