Quote Originally Posted by anendeloflorien View Post
VPI stands for Vida Preciosa International. They are a breeder of ball pythons and the reason that those snakes are labeled as "VPI axanthics" is because they are from their line of axanthics.

I believe (and I could be wrong on this) that the different lines of axanthics (Snake Keeper, NERD, VPI etc...) are for the most part not compatible with each other. That is why they are labeled as to which line they come from.

Hope this helps! (TM Adam Wysocki )
Does NERD have a line of their own? I only knew of three * save for the reds* Jolliff is the other though.