I have seen some talk that there is a test to determine what breed a dog is, presumably used on mixed breeds. It's the kind of test that just made me go "Um, why?" To me, it's something useless to spend your money on (if you own a mixed breed.) Anyway, it's not anything that is going to make your dog registerable. The legitimate national organizations (AKC, Cdn KC, etc) need much more than that. Everyone thinks they have the best dog you could ever have. And that sure doesn't make them worthy of breeding! The problem is that you have no idea if your dog is a genetic fluke. He might pass his own health tests for eg but have siblings/parents/ancestors who didn't or who couldn't. In other words, he can still carry a whole host of problems (both health and temperament) of which you have no knowledge. In this day and age, we owe more to the puppies we produce and to the people who buy them. We should take every precaution in order to breed the best. We should be breeding with complete knowledge of the family tree (pedigree). We have states out there that have puppy lemon laws - you can literally be held fiscally responsible these days if you produce and sell problem puppies. In your situation, you'd be fully responsible because you would be breeding your dog without important information needed to prevent problems.