Why use an 8 month old puppy to sire a litter?? Was it an accidental tie?? I can not see 1 reason worth while to breed a dog at this young of an age unless it is money driven, and impatience to put in the full 3 yrs of training and raising and testing health/athleticism/mental stability, and just to produce puppies. Unless he and the female you plan on mating him to are the LAST 2 example of their breed living and breathing, and the chance of losing them would mean extinction, i vote against it. In what ways has he proved himself worthy of passing on his genes?? For gods sake he isn't even lifting his leg yet. Let him be a baby, then let him grow up and prove worthy before breeding him. just my $.02 Mike