A gecko can climb up a smooth glass window. Science explains how critters scale seemingly slippery surfaces. How Critters Climb explains how climbing animals' bodies let them travel up walls and tree trunks as well as the forces at work to keep their feet on the surface. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards.