The size is approximately 26cm tall and 21cm wide. It has 123 pages, so you can enjoy it a lot. It has information by type, evolution, and characteristics, and I enjoyed reading it even as an adult. The illustrations are easy to understand, so I often used them as examples for drawing with my child(^^) I don't think there are any major scratches or stains, but there are folds and signs of use as shown in the photos, and there may be other oversights. Thank you for your purchase if you understand that this is a used book. ☆