The puppy I am getting only weighed 7 ounces at 2 weeks, now at 3 weeks she weights 16 oz. Have you ever heard of this big a growth spurt? She still looks very small, looking at the yorkie growth chart I can't estimate what she will weight. her sister from the mom's last litter only weight 2.5 full grown. Both mom and dad are small around 4 lbs.