Oh, yuck, JW!!! That sure would have hurt.
Had a Fox Trotter mare once, bought because she was "pretty" .... never did that again, although that is my #1 priority, but closely followed by well broke, then loves people.
She would shy at anything, even large rocks/boulders along the trail. She was not the "spook in place" type, she was a "plant 'em, turn and run" type, which is the type you end up on the ground! She only dumped me once, and then I learned her ways. NEVER could relax on her, as if I did, she would find something to "scare" her, plant her feet, do an immediate 180 turn and take off in the opposite direction. When she shied at the same boulder (about 5' tall, wide, deep) along a trail going and coming back, I told my hubbie at the time, she was getting sold. No need to never be able to relax. Always had to be on guard with her. Pretty just didn't cut it for her after all.
My two mares I have now are VERY pretty, quite the lookers. The Paint mare used to be a show horse, but she's way too skittish, can't stand still in a line up, so they sold her as a brood mare. I enjoy her antics, actually, as she has never unloaded me. Her worst try was last week, she pulled her head down (to get more length of reins, more power) and then bunny hopped left, then immediately to the right, which she had never tried before, and unseated me for a split second. I backed her into the ditch, which she HATES mud, and after that, each time she tried to bounce (I usually laugh when she does this, as it's her way to unleash her frustration, but not harmful to me, just jumping straight up and down with a rounded back LOL), I would back her into the ditch. That cured her that evening. Next time I take her out alone, she will be upset, as she is very much a buddy horse, but she needs to know that I am her buddy for the evening. Takes her about a mile to understand she's got me, and no one else, to count on. The cows .... well that will be fun, as she does not have the mind to accept them and it will take longer than looking at them for 10 minutes like last night with the Fox Trotter. If the cows behave the same way next time, she will figure it out, just take a little longer.