It depends a lot about genetics more then just the parents. Are you specifically looking for a tiny pup? Did the breeder purposely breed for small pups? Going by the fact that the female is smaller then the male and under 5 pounds I would be worried this might not be a reputable breeder that dosent know what they are doing and that could lead to bigger problems.
__________________  Taylor  My babies Joey, Penny , Ollie & Dixie   Callie Mae, you will forever be in my heart! |