These pups wont be whistling or blowing after a few runs they'll be looking like my other pup i sold fresh after two or three runs, lad who owns dice the sire to the pup couldnt belive her for her age at ten months big lungs and thats because i keep them fit from a young age so only person who'll be whistling is me on the way home my lad. You do what you do and al stick to my way. One of the pups I bred sold for four figures ten months and nailing um lad couldnt turn down that kind of money just some numpty with a bit of money bought him. fair play if it works you dont change it,i just thought