Worked with a lady whose dad had about 20 bison. He built a pasture with welded pipe fencing and no corners so they couldn’t get bunched up & destroy the fence.
i was a caretaker for a bison ranch- small one, with 15 bison with young calves- the corals were wooden, and when it came time to feed them their grain along the fence line, it was always kinda nerve wracking knowing the bison could bust right through with no problem- the main male woudl always follow us as we grained the dozen bison, and always challenge us as we tried to throw the grain through the fence into the containers-