If your kid loves dinosaurs, or you own a dinosaur book at all, you should add this one to the collection. Two men, Cope and March, led the pack in discovering dinosaur bones in the US. They made paleontology cool. But they were very competitive, and raced against each other to find the most unique dinosaurs. They were so competitive that they even stooped to faking finds. This story is very interesting, but told in an entertaining and rhyming way. The rhymes can be harsh at times, and do not always flow freely, but the illustrations and ideas more than make up for it.