I have been breeding Yorkies for 27 years and can tell you that no one can predict the size adult size of a 15 day old puppy. Sure - sometimes a person might guess right but that is all that it is - a guess. I have not found the 8 week old weight to be an indicator either but that will vary with lines. The old daying that doubling in the 12 week weight is usually pretty well on the mark but keep in mind that some lines grow really late and some really early. The best thing to do is check with the breeder of your line and see what their opinion is.
Good luck with your litter.
Charlie |