This puzzle was a lot of fun to put together. Even being a Level 3 puzzle, I was surprised at how easy it was to assemble. At 36 years of age, and ever since my Husband and I lived in Seattle, WA and visited the Pacific Science Center once in a while, I have become interested in dinosaurs. The Pacific Science Center has a whole entire exhibit room dedicated specifically to dinosaurs. So this is a great puzzle to have. I think T-Rex's are my favorite dinosaurs, too. It was a little difficult finding a starting point on this puzzle, but once I found that, I was all set. Thanks for a great and fun puzzle !!