They are already re-proven by multiple registries as being the Thai cat. Siamese and Thai cats are selectively bred and pedigreed in various cat fancier and breeder organisations. The conditions "Siamese" or "Thai" are useful for cats from this particular breed, which happen to be by definition all purebred cats https://dominickspgqc.weblogco.com/35206436/persian-no-further-a-mystery