What isyour birthday dinosaur? This intriguing presentation describes 366 species of dinosaurs from around the world, one for every day of a leap yearFrom Eoraptor to Ruyangosaurus, this abundance of prehistoric reptiles (and a few early birds) is presented with illustrations, fast facts, and a short informational paragraph apiece. The album opens with introductions to dinosaurs and their world and closes with a spread that explains their demise, along with "nearly three-quarters of all animal and plant species on Earth at the time." The day-by-day presentation doesn't appear to follow any organizational underpinning, although occasional clusters feature groups of six dinosaurs who have something in common-for example, February highlights "speedy dinosaurs" and "insect eaters," while July has categories labeled "meat-eating dinosaurs" and "sea reptiles." The attractive illustrations, from vignettes to double-page spreads, are bright and engaging and provide some sense of each animal's habitat. There are no sources for the information nor any explanation for the colors the artists have assigned them. The likely audience for this collection consists of very young dinosaur enthusiasts, who will revel in the variety of creatures that have been discovered. Titles such as Yang Yang'sThe Secrets of Dinosaurs (2021) present these reptiles chronologically and give readers a better idea of who their neighbors were.Remarkable for the number and variety of dinosaurs displayed. (pronunciation guide, glossary, index)(Nonfiction. 5-9)