The wood bison is a large herbivorous mammal native to North America, specifically found in the boreal forests of Canada and Alaska. It is the largest subspecies of the American bison, characterized by its thick fur, large head, and powerful build. Wood bison primarily graze on grasses, sedges, and other vegetation, playing a crucial role in their ecosystem. Wood bison were once near extinction due to overhunting and habitat loss, but conservation efforts have helped their populations recover. They are now protected under various laws and are a symbol of wildlife conservation in regions like Wood Buffalo National Park.