This MasterPieces 18 inch x 24 inch 550 piece Hidden Image Glow-in-the-Dark Puzzle features 14-18 hidden animals in each box. Can you find all hidden animals? Some glow-in-the-dark and others are hiding in plain sight! Artist, Steve Read hides amazing hidden images within each beautiful piece of art, and his puzzles never disappoint. Find all the secrets in these wildly entertaining puzzles! To reduce their impact on our environment, the chipboard used in these puzzles is made of recycled material.