We can see birds perched on tree branches and deer in fields. However, many young readers may not know about the complex world beneath their feet. Some animals make short-term homes underground whereas others live underground all the time. Your readers will find examples of underground animals and learn why they live there. While some people think underground animals are pests, readers will learn that many of these animals help maintain Earth's crucial ecological balance. They'll want to burrow into this book and find out about underground animals.