Formerly inhabited the prairies of western Canada and the United States. Mainly grasses and other succulent vegetation. Bison historically lived in herds of thousands, but are now found in small herds of about 50 animals. The herd provides defense against predators. When in danger, females surround young and bulls surround females.
Bison are ruminants.
Bison like to roll in loose soil and an ecological relationship has developed involving prairie grasses, the prairie dog and the bison. Coat, thick heavy mantle on head and forequarters to keep warm in winter. Mantle is shed in spring for a cooler summer. Horns, used in defense against other bulls, wolves and other predators. Unlike domestic cattle, bison are able to forage in snow to reach food.