Most of our puppies fall into the 50-80 pound range as adults. The larger boys may possibly have the ability to to reach close to 100 lbs. It is difficult to determine what size a puppy will be when they are younger than 7 weeks of age. After they reach that age, it is a little easier to cast a judgment as to what size they will be when fully grown. We still can’t be for sure though and so that is why we give a range.