Putting this in training because I do think training has a lot to do with it Often I hear people say 'you can't ride papers'. I used to say it myself until I got into quarter horses. I've come to learn that papers matter. They matter for resale. They matter when evaluating a prospective horse for a particular job. There may be duds, but by in large papers are a large factor in what a horses potential should be. Conformation is a large factor as well but that is often influenced by breeding. For instance my mares. My broodmare is cutting bred top and bottom. She lives up to it. She would just as soon eat a cow as look at it. My filly is cutting bred on the bottom and her sire is a reined cow horse. She's taken to cattle like a duck to water and has a natural deep stop. She's been on the flag twice and is already drawing naturally. I lightly exposed her to cattle over the summer and she has shown an incredible instinct to mirror them, boldness when going into the herd, as well as desire to cut them. That's been bred into her. I've trained her myself, everything she knows is either natural instinct or taught by me. Her training had been geared towards working cattle but I'm working with an ingrained desire to do so. You can't train a horse to want to cut. That has to come from the horse. Which comes from the breeding and is nurtured by training. I also own a grade gelding. I'm not saying papers are the only thing that matters. But they do matter.