Please let me know if you have one ufa thank you! ^_^
it might help if you make clear what high-statted means for you.
Also, really high-statted Pets are rarely being adopted out because it takes so much more time and effort to train a pet than to color it for example. And if Pets in the higher stats range are UFA there usually is a lot of competition and the old owners want applications.
Apart from that good luck with your goal.