Ours range between 5-9 pounds.
A friend of ours had one that was barely 3 pnds.....she grabbed hold of a squirrels tail once and got drug all over the yard and about a foot up the side of a tree!!!!
Once we determined she was okay, then we burst into laughter, but we were nervous when she fell (that small they are so fragile).
Just depends on the Yorkie! She was 18 when she passed away and
never got over 3 pnds.