My neighbor, about 3 miles away, has a bison farm...probably keeps between 100 and 200 head.
I notice that when he goes out in the winter to feed bales of hay, he stays above ground, stepping from tractor to sturdy wagon and back.
Each time I go by on my way to my recreation acreage, I notice they seem quite docile and don't give my vehicle a second look.
So, one day I stopped by and in conversation, asked him how they may receive a stranger in their pasture..
He said it depends upon the day.. One day they may completely ignore him, while the next day they may decide to use him for a soccer ball !