I just can't begin to say enough good about this series. Based on character building, these books incorporate animal traits and teach about the animal in the process. Vivid pictures of the animals with detailed drawings of how they are made. After reading about the animal there is a Bible story, with Bible reference and drawn illustration that goes along with the character trait but teaches it from a biblical perspective. I know as a child I always really enjoyed these books, the animal studies are great and then learning about God's Word was always fun too. These could be used in unit studies as a great resource.