Steelblood Bandog Kennels looks like they have athletic dogs, well trained and nice training facility they are in Europe however. Make sure to do your own first hand research by visiting various breeders; their dogs and kennels. Make sure prior to purchase to have them temperament tested are up to date on shots, are healthy by vet check, make sure parents have zero hip dysplasia verified by x-ray.

https://www.steelbloodkennel.com/

https://www.youtube.com/watch?v=PWd9G2CHaOQ