From a worm's tiny tunnels to a giant prairie dog town, all kinds of amazing animal homes exist underground. Each title in this engaging series highlights one animal and the home it creates. Features include a table of contents, fun facts, Making Connections questions, a glossary, an index, and QR Codes that link to book-specific online resources. Aligned to Common Core Standards and correlated to state standards. Cody Koala is an imprint of Pop!, a division of ABDO.