The term "Bison bison" refers to the American bison, a large mammal native to North America. It is characterized by its massive build, shaggy dark brown fur, and a prominent hump on its back. Bison are herbivores, primarily grazing on grasses and other vegetation in plains and prairies. They play a crucial role in their ecosystem by helping to maintain the health of grasslands. Bison bison is divided into two subspecies: the plains bison and the wood bison. The plains bison is more common and can be found in national parks and reserves, while the wood bison is larger and primarily inhabits the forests of Canada. Both subspecies are important cultural symbols for many Indigenous peoples in North America.