We put a deposit on a litter with a reputable breeder. We have 1st pick on a female standard color. The litter were all the same size at birth, 3 males(2 cream 1sable) 2 females ,cream and a fawn. We chose the fawn and she is adorable. At about 4-5 weeks we saw that she is noticeably smaller than all the others. She is coming on 8 weeks and still quite small. She seems normal in all aspects other than size. Mom is about 18 lbs. i am going to have her health checked before we pick her up. My question to you all is : am I putting too much thinking about her size?