Each puzzle comes with an educational Madd Capp Fun Facts booklet. On one side is a fold-out puzzle image to hang as a poster or use as a reference. On the flipside is a wealth of amazing facts. Did you know, for instance, that the sound of a bull elk bugling in mating season is wild and otherworldly? He simultaneously roars from his mouth and whistles through his nose to attract cows (female elk) and drive other bulls away.