I just breed my fourth litter and am having a Birthday party for a litter of four that will be 1 on August 23rd. Mom was over 8 lbs and dad was over 13 lbs.
Of the 4 puppies that will be a year old one is under 6 lbs, one just over 6 lbs, one is around 7 lbs and one is 14 lbs!
The runt is the over 14 lb one. It is impossible to make sure they are small as they can go back a gereration or two to get their size.
I have a litter three years ago that the runt is around 7 lbs while mom was 4.2 lbs and dad was 4.6 lbs - go figure. Four puppies and the biggest is arount 5 lbs. none smaller than mom and dad. Just a healthy bunch.
I have 5 yorkies ranging from just over 4 lbs to 14 lbs and love then all equally. The bigest one is great for long walks and rough play. The littlest is prissy and loves to dress up.
Everyone has their preference but to love any Yorkie is an honor! I wouldn't trade or sell any of mine for 1 million dollars