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					Originally Posted by CouversMom  There is no way to know for sure until she's an adult. When it comes down to it, you should love her no matter her size! | 
 
  
 
 
It really depends, but it does seem that multiplying the 12 week weight by 2 is fairly accurate.  Jackson was 6lbs at 12 weeks old and weighed 12lbs at 1 year old, though he did gain a bit of weight (but still at a healthy size) after 1 year and is now 15-16lbs.