Originally Posted by thesilverspear
But surely any horse can do reining maneuvers? I've seen her do sliding stops when galloping around a field, and she can certainly spin, as she has done when spooking at something. Why should it be limited to QHs and paints?
It's not- there are reining arabians and reining appaloosas. If you breed the qualities necessary into any breed of horse, you can have a reiner. But, like kayty has stated about dressage, there are breeds bred for it specifically, I.e. The QH and paint, therefore they will dominate it like warmbloods dominate dressage. There are strains of arabians bred for reining, and appys bred for reining, but only certain strains- the QH especially, I'd say more so than even the paint, on the whole, is catered towards reining and western sports. That's why they excel in it.
I'm sure she can turn and stop, so can my sister's trakhener, who has stopped so quickly my sister sommersaulted over his head (he's almost 17 hands... she was pretty sore for a while LOL). But against my QH, he can't come close- Jake, her horse, is uphill, and excelled in jumping/ dressage because of it. Gerri, my QH, is more level/ downhill (pretty close) and 14 hands, with a powerful hind- he can turn so fast I don't even know what happened. Overall, if both of these horses got the same training, eventually Gerri would beat Jake, the higher they went in reining.
With proper training, you could do low level of any discipline on any horse. But as for high-level reining, she's not built for it, like reining-bred quarter horses and paints. You didn't say that you wanted to started reining with her, you said that you wanted to seriously get into it- which means you want to go to the high levels, right? Don't take what I say as discouragement towards the entire idea, it would be great to try reining on her, but although she's a lovely mare, she would not hold up in the higher levels.
Thank you for taking the time to read this, and hearing out my opinion. :)