Good account from the photographer - see also www.theguardian.com - who's line about being an Army photographer is classic.

As for the bison, really hard to overstate: they are EXTREMELY dangerous, easily riled, fast, and can turn on a dime. The bearded guy seemed to be doing about what he could. The buffalo appeared to have staked out that table, perhaps as a feeding area? Anyway, when in places like Yellowstone it helps for perspective's sake to bear in mind you've crossed over the wall between your world and theirs. Think of it kind of like Jurassic Park. Or Florida.

There's a fascinating account of the last big buffalo hunt of the Standing Rock Lakotas in 1882 written by Indian agent James McLauglin in his book My Friend the Indian (archive.org) - starts at page 97. Injuries galore.

Yellowstone tourist tossed 8ft in air by bison says attack could have been worse
Carl McDaniel, 65, says run-in was not as catastrophic as it could've been' in first remarks since attack that injured him
www.theguardian.com

Of perhaps critical importance: "Bison rutting - or mating - season in Yellowstone runs from June until about September. The NPS statement about the bison attack that McDaniel survived did not state if the animal may have been aggressive because it was navigating the heart of rutting season."