Lovely answer Vicki, what else can you say? Tis true Rough, does also depend on parents, were they full pedigree themselves? were they large or small versions of their type? In the end you will find out what size he gets to and which parent he looks most like. All this will come when he is about 9 months old.
the litter that our mabel came out of had one male puppy, who takes after his mastiff father, size wise, but all the girls are staffie size like their mum, so you're going to have to wait and see... but then, that's all part of the fun
