Some people have thin eyebrows. Some have thick eyebrows. Some have blonde eyebrows, while others have dark ones. Even some animals have eyebrows! Readers learn fun facts about this physical feature as they explore introductory life science concepts. Cute illustrations and colorful photographs give readers an up-close look at eyebrows on a variety of people and other living things, inviting them to compare and contrast. In addition, the clear main text presents important biology topics in a way that is easy for young readers to understand.