The+bisons.

The bisons live in the Grait Planes of the United States, Canada and Mexico. They are herbivore mammals that feed on moss, leaves and branches. The female bisons are smaller than the male ones. They have a hight, long and narrow necks, their body is very wide but their have short, thin legs. Males  can weigh over 900 kg and can measure between 150 and 180 cm long. The female bisons give birth to only one calve per pregnancy and take care of it until it is sufficiently robust. Bisonts are excelent swimmers in the water showing the same strength and endurance that characterizes in all his actions. The North American Indian depended on the bison for food, clothing and shelter , and in the treeless plains , dry droppings used as fuel.