Breed? I'd say Appendix (QH/TB) with the possibility of the QH also being mixed with Paint (you see it A LOT theses days, QH/Paint mixes) So maybe a TB Sire and a QH/Paint Dam. He's cute, I love it when horses have white markings on their legs that have black spots in them (I know there is a name for them I just can't think) His facial marking is what has me thinking possible paint. Overall, I like him. And as far as discipline goes, he doesn't have any huge confirmation issues. In fact the only thing I see is something that some people prefer and that is that he has a short back. Its not a fault in my mind, it all kinda depends on how the horse carries themselves too. I think he could go any direction really.