The American Bison, known as the American Buffalo or simply buffalo, is a North American species that roams from Mexico up to North West Canada. They are the largest land mammal in North America. When bison are scared they run, like there is no tomorrow, which is called stampeding. Bison have very good hearing and smelling, if you try to sneak up on one it will smell you and run. Did you know male bison are called bulls? When they sense a predator coming they stand in front of the females (cows) to protect them. If that doesn’t work then they stamped. Male bison can weigh up to 2,000 pounds, as heavy as a car, and can grow up to 6ft., the height of an average male adult. While female bison weigh up to 1,000 pounds and reach the 4-5 ft. in height.