Yikes!! That was really close. What would you all have done if they had charged?.....hmmmm? Plan B? I'd love to see some like that. It's snowing in Casper ( I saw your tweet) I don't miss that, even though I miss Wyoming. We have high winds here today...makes me think of Wyoming. Good thing you two got home when you did, or you would have been in all the tornadoes and storms. Still some storms all over the midwest and East.
Good thing that you aren't the bison in the other picture from the Yellowstone guy...maybe you shouldn't be so close next time!