Does a Zorse count?

Half quarter horse/ half zebra.... nastiest critter I ever did ride....
Wish I had a picture of that bugger, it was probably 10-12yrs ago(pre-digital-age). He came as a 2yo, wild as if he was straight off the Serengeti. Woman that owned him wanted him trained so she could ride him in parades

. I had to keep him in a stall the entire 6mnths it took me to get him trained, he could jump every fence on the property. First day on the farm he jumped through stall window and I had to rope him to get him caught before he jumped another fence. Ended up putting hog panel over all the openings in his stall.
Took me a week just to where I could get a saddle on him without him biting/striking/kicking my head off... all 13 hands of him

Tough mouth does not begin to describe how non-bridle-able ol' "Zeb" was. After another 2 wks of round pen bridle/surcingle work, I finally got the nerve to get on him. That little sum beach took off at a flat gallop around that round pen, while four-foot crow hopping at the same time..... WITH MY KNEE IN HIS MOUTH! Thank God he was so athletic he never missed a step, and kept right on bucking another 10 trips around that round pen. He finally got winded and came to a stop on his own, my KNEE STILL IN HIS MOUTH

Not wanting to get jerked off and stomped to death, I sat there.... motionless... trying not to even breath, so as not to set the little demon off

Finally, he eased his grip and released me... for no other reason than to get a better breath. He did the same thing, less the knee thing, every day for almost 2wks before he finally gave in. That first week I passed blood in my urine from the bruising to my kidneys from him bucking so hard(I'm sure you wanted to hear that

). His buck was like a jack hammer, hardest I ever rode.
Zero natural vertical give forced me to put a pretty high leverage bit on him right away. I also had to run a mule "tail strap" on him, just so my saddle didn't slide right over his non-existent withers. When I was on him, I could just about touch my heels together under his belly, and my feet were mere inches off the ground when in motion...
For all the bad things about him, that sucker turned in to a phenomenal equine. I'd never rode many mules, but what they say about the hybrid is a fact, they are much more athletic than either of the animals they come from. That little dude could lay out a pair of elevens like it was nothing... without shoes. He could spin so fast he'd throw you right off if you weren't sitting back. That woman went on to ride him in many parades, although I never felt he was really ready for it. Neat animal I hope I never have to start again.