This MasterPieces 15"" x 21"" 3-D Extreme 500pc Puzzle, created by Howard Robinson, is a treasure to assemble. Made with innovative lenticular technology, this image changes right before your eyes, and features moose, bears, fish, raccoons, wolves, and all kinds of other animal life, traveling together alongside a beautiful stream! This puzzle creates the perfect opportunity to spend time with kids, challenge the mind, and entertain the whole family. To help make the puzzling experience more enjoyable, the 3-D lenticular screen is not only featured on the puzzle, but also on the cover and side images, to aid in assembly. To reduce its impact on our environment, the chipboard used in this puzzle is made of recycled material.