I've heard if you want to replicate a dog...pick a pup that looks just like them. We'll see how that works out, lol.
Ive heard that too, I kept a male out of my last litter that is a spitting image to his dad physically and attitude wise, only difference is his color, and so far at just over a year old hes just as aggravating as his dad was at that age. lol good luck nice lookin pups!