Hello. It may very well depend upon the requirements of the organization or group with whom you want to register. Can you tell me what kind of registration papers, and with what group, are there on the registered horse? Also what kind of horse is the unregistered parent? With what exact registry, do you want to register the colt? More specific information should help us to help you better with this question. Thanks. Patricia (Incidentally, I'll be having your question moved to the all pets area instead of under dogs. It will not change the way you will receive your answer.)
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