I’ve done some research but some people have made it their mission to make things confusing. What is considered an Appendix? I know it is a QH, TB cross. (I’ve read it only has to be a TB cross. Is that true?) And only a foal with a TB parent and a QH parent can be registered as an American Quarter Horse. But what about other combinations, are they still considered to be appendix horses or just mixes? For example appendix x appendix; appendix x TB; appendix x QH? If you’re breeding a line of TBs with an appendix thrown in how far away do you have to get to not be considered an appendix?
One of my mares, a QH bred for gaming, is 1/4 TB (she’s actually related to my TB through Secretariat, how cool is that?) What would she be considered?