[outsitWrord]

How about specific APBT bloodlines then, that dwarfism occurs in?

I think yours are UKC registered aren't they ... that tells me much right there. The UKC will COMMONLY and ROUTINELY accept different/mixed breeds as APBT. Arguably more so than any other "highly recognized" registry.

It's funny ... I have a dog that is 100% verified, proven AND DNA'd with the ADBA registry as a Colby bloodline APBT. Colby documented and linebred ALL the way back to the inception of the APBT as a registry recognized breed. HOWEVER comma, while I also have the UKC paperwork for my dog, both sire and dam are registered with the UKC and DNA'd with the UKC my dog would not do well AT ALL in sanctioned events in the UKC. Why ?? ... because apparently the APBT is not what the UKC is looking for. They tend to award dogs with an AST look about them.

On the other hand, my pup has placed in EVERY ADBA event he's been entered in while bringing home 2 Thirds and 2 Firsts from a sanctioned point event.

Which leads me to ponder where the real APBTs are. Hmmmm.
On the other hand, some would say not in any of those registries