[mojo]

I have a girl that is 3 1/2 - ish pounds and I will tell you the bones on a smaller dog are incredibly fragile (I got her from a show breeder too, she was supposed to be quite a bit bigger). They are unbelievably thin. And unfortunately, she is a runner and a jumper. Have not been able to break her of that. She will take a flying leap off the couch, my bed etc.
I also have a boy who had an open fontanel when I got him. I think that is more common in smaller yorkies and you have to be very careful. One bang to the head can be fatal.
There are a lot of things and I am sure you will get a lot more responses.
Curious when you say very small, what will her appx adult weight be?
Good luck with your baby!