They also eat some broad-leaved plants. Bulls stand 6 feet high and weigh up to 2,000 pounds. Full-grown buffalo cows weigh up to 1,000 pounds. Calves are born in the spring and weigh about 50 pounds. A few hours after birth, they can run by themselves, but they still need their mothers for milk and protection.
Wolves sometimes kill a calf or sick animal.
The buffalo s chief enemies have been human hunters. Buffalo sometimes charge their enemies. But they usually run when they get scared. They can run 35 miles an hour, nearly as fast as a horse. They can gallop for up to 10 miles.