What is the difference between a quarter horse and a paint besides markings?
That is a tough question one which has sparked a few debates. Some say they are two very separate breeds. Bloodlines wise modern paint horses are more quarter horses than Indian pony. They have been just bred to expand on the larger white markings. Historically Pintos were Indian ponies that had allot of the same history as the foundation quarters they were a mixture of Spanish barbs, Arabs, Thoroughbred, and with a little of this and that brought in by the settlers, but they were bred for agility and fearlessness in battle or the hunt rather than bulk and working ability like the quarter horse. You can take full offspring from one pair of horses and by breeding them to different mates over a period of time with different desired characteristics or markings you can create separate breeds. It basically all about what you mingle in the family tree, what is desired in characteristics, working ability, color, or markings.