All you can do is go by what the written guarantee promised. Unless you have something in writing saying that the breeder guaranteed size and would do" such and such" if it exceeded the guaranteed weight then I do not think you have any recourse.
I personally will never guarantee a puppy's weight, genetics have all the control and I just am not able to see into the future. All I can do is know my lines and make the best possible estimation.
If the puppy was brokered then I doubt the breeder would be able to estimate adult size not knowing and working with the lines firsthand.
I always recommend to people wanting to buy a smaller yorkie to buy one that is 6-12 months old. Still not a guarantee but your chances of knowing adult weight is so much better.
__________________ Jackie JaLa Yorkshire Terriers |