I know I've posted this before, at least twice

, but it's a guessing game for the most part...my pups from my oops litter produced pups that are now from 4 to 11 pounds at eight months old! And like Fran2478 said, a smaller mom and dad can produce a big pup or vice versa. I think if you buy from a reputable breeder who has and knows the weight of ancestors you can better guess the adult weight of pup....JMO