How should I go about picking my new yorkie? The breeder sent me pics of the litter at 2 weeks and wants me to pick one, since I have the first dib. She gave me the birth weights and the current weights. For example, one of them weighed 3.6 ounces at birth and is now 12.4 ounces 2 weeks later. Does that mean that one will probably grow slower now? I am just so confused! Any advice would help us greatly!! How do you know which one is going to be the smallest?