When I moved a friend up to Big Sky a couple weeks ago, I had to slow down to slip through a flock of Big Horn sheep which were crossing the road. One of them was sporting a full curl.
They really were a blessing too, because up until we came up on them, there was this guy tailgating me something fierce, even though I was really pushing my van's ability to hold the road. After we passed through the flock, the tailgater was no longer there. I figure either he stopped to look at the sheep, or they just blocked the road, and allowed me to put some distance between us.