Some country called animals in different name. In this country American bison is called buffalo but in America it is not cow. The American bison is commonly known as the American buffalo. As I said, some countries called then buffalo. The word bison is a greek word, meaning ox like animal while buffalo originated with the French fur trappers who called these massive beasts beufs, meaning ox or bullock. Both names bison and buffalo have similar meaning. The bison or what you called buffalo is belong to Animalia kingdom. The class of this animals is mammalia and the family is bovidae. How can you identify a bison. It has a shagg, dark brown winter coat, long, and a lighter brown summer coat and lighter weight. The male bison is larger than the female and they reach uo to 6 feet inches and 10 feet long and weigh 900 to 2,200 pounds. Bison eat grasses, they eat in the morning and evening and rest during the day. Bison get mature at three years of age. The life expectancy of the bison is 15 years in the wild and 25 years in captivity. The bison were hunted almost to extinction in the 19th century and were reduced to a few hundred by the mid 1880s. The people hunted them for their skins and the rest of the animal left behind to decay on the ground. The skin of bison were used for industrial machine belts, rugs and clothing such as robes.