Bison and buffalo are both large, horned mammals belonging to the Bovidae family, but they are two distinct species. Bison are typically found in North America and Europe, while buffalo are found in Africa and Asia. Bison are usually brown with a large hump on their back, while buffalo are black and typically do not have a hump. Bison are also larger than buffalo, with males typically weighing up to 2,000 pounds, while buffalo males usually weigh up to 1,500 pounds. Bison also have longer horns than buffalo, which can reach up to two feet in length. Finally, bison usually live in small herds, while buffalo can live in herds of up to several thousand.