its true all you can do is give your best guess on the weight and the ones that assure you of a size, are usually trying to get you to buy the puppy. i have been right on the money and i have been off a few pounds before. i would fix the little boy and either keep him or rehome him and get your another male. the female may be a good sturdy breeding female..unless she gets bigger as well, then you are breeding to far out in size. msot breeders tend to have several yorkies. you could fix and keep both and work towards another pair...it took me several males to get one the right size.
good luck, post pics! |