Not the best pic of her tail but you can see it's quite a bit longer than a GWP.
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Of course it's unlikely you'll never really know your boys true breed, but he sure looks like a PP to me. As long as he takes to bird hunting and is a great companion to you, you've both won the jackpot! I'd find a NAVHDA in your area and get in on some training days. Take it slow and make sure the obedience is down pat first. Good luck to the both of you!