@giza1 "To play devil's advocate, would it really be such a bad thing if another breed snuck in there and no one was the wiser until a DNA test was run? It would only serve to expand the gene pool, which some breeds sorely need. "
It would, in fact, be a freaking disaster. Every single puppy produced, any of their progeny... all removed from AKC. Period. No discussion.
"Take the Doberman for instance - a man made breed in the first place "
Nearly all breeds are "man made." Doberman Club of America could petition to add in outside dogs for a limited time.. but we saw how effective that has NOT been with Basenji. The idea was great, but the actual impact on the gene pool was shockingly (to me) little. A good discussion is here: https://basenjiforums.com/topic/11095/what-does-it-mean-to-add-genes/100
Sadly, Dobermans are not alone in severe health issues. Popular studs helped bring many breeds into very limited gene pools and spread genetic disorders widely. I love Cavalier King Charles Spaniels... and I wouldn't own one for love or money.
Heart mitral valve disease (MVD) is the leading cause of death of cavalier King Charles spaniels throughout the world. MVD is a polygenetic disease which statistics have shown may afflict over half of all cavaliers by age 5 years and nearly all cavaliers by age 10 years, should they survive that long.<<
So yeah, opening some stud books might help, IF you got enough members to use the studs to actually make a difference. But sadly, you probably need to do 3 or 4 test generations, because sometimes you find the mix may fix one issue, and make another massively worse.