A fun introduction to prehistoric creatures that aren't dinosaurs, and why! Everyone knows what a dinosaur is, right? Well, maybe not. Dinosaurs are actually just one type of extinct animal from prehistoric times. So what sets them apart? Here, readers are introduced to ten prehistoric animals. Each one looks like a dinosaur. But it lacks at least one key feature of all true dinosaurs. Animal by animal, each of those characteristics is added to a growing list, until, by the end of the book, readers know what makes a dinosaur a dinosaur. A dinosaur by any other name is. . . Not a dinosaur, of course! Dinosaur-loving kids will learn what a dinosaur is by discovering what it isn't, in this fun and innovative introduction to other prehistoric creatures. Everyone knows what a dinosaur is, right? Well, maybe not. Roaming the earth alongside dinosaurs, there were other lesser-known animal species, but they weren't dinosaurs. So what is it that distinguishes dinosaurs? Here, readers are introduced to ten prehistoric animals that look like dinosaurs, but are missing at least one key characteristic that all true dinosaurs have. One by one, each of those "missing" characteristics is added to a growing list, so that by the end of the book, readers will know what makes a dinosaur a dinosaur.