By the Yorkie weight chart (Which we all know is just a guesstimate)
#1 boy should be 7 lbs.!
#2 boy should be 6 lbs.
#3 girl should be 5 1/2 lbs.
#4 girl should be 4 lbs.
So we've got the whole range.
When that first big boy was born my husband said...let me get the leash he's ready to take a walk!