I looked at your past post. Your pup came from the Steffenmeiers. A very well known puppy mill, that sells to pet stores. Your very, very lucky that your pup has been healthy. That is not the case for most of the puppy buyers.
What I've seen from being boots on the ground, for rescue. You can Not trust any paperwork from them. Registration, OFA, health certificate, and shots given, may not belong to the dog/pup in question. It may beong to a different dog that could pass those tests.
Health problems can skip a generation, and then show up in offspring.
If you are wanting to compete with your dog, AKC has a registration for that. But it does Not include registering any litters produced by said dog.
If you want to know more on the Steffenmeiers, contact Debra with New Hope Vizsla rescue.
Enjoy your pup, and consider yourself very blessed that he doesn't have health problems.
Not all those who wander are lost.
Life is just a leap of faith.
Spread your arms and hold your breath and always trust your cape.
Two things define you. Your patience when you have nothing, and your attitude when you have everything.