Looks like you've had an overwhelming response that the puppy is a Yorkie. One problem you may have with two females in the same household is that one of them may take on an alpha-female role. Between the two, my guess from the information you have given - it will probably be the smaller one which may cause problems down the road when you are attempting to break up a potential fight between the two. Doubling the size at approximately 10 -12 weeks, as others have suggested, is what I also find pretty accurate. I doubt that your new puppy will be a giant though. I hope that your smaller pup warms up soon to the idea of your new addition. Best of luck to you. The new puppy looks like a sweetie! She looks like she has a lot of love to give. Also, about the ad for her brothers.....I don't think they look like they came from different litters, they really do have many similar features. Again, best of luck. Tracy |