Whom Do you Register a Purebred APBT if you were retarted and lost the registration paper with the PIN number?

Call back to the breeder they should be able to help you. You can also try the UKC they might be able to help, the sire and dame should be on record as well as the litter. I'm also getting tried of anyone breeding APBT being called backyard breeders. If the breeder sent what he needed to get the dogs papers they are not a backyard breeder. There are people who breed APBT for the love of the breed and to improve it. It is these people which have started breeding them for temperment.