American bison used to roam the Great Plains by the millions. However, white settlers killed most of the bison and stole their habitats as they moved west. This book tells the story of a mighty mammal on the brink of extinction. Readers will learn how bison populations dropped, and how conservation efforts allowed populations to rise once again. This book combines a zoological and historical lens so readers can connect deeply to the story of the American bison. Photographs and historical images bring readers face to face with the largest land animal in North America, while graphic organizers allow readers to visualize important facts. Readers will come away with a strong understanding of bison conservation—both in the past and today.