I have 4 silkies that are now 9 days old and there is one black one that was smaller to begin with but now 9 days later it looks like it hasn't grown and the others are WAY bigger and more active. He/she eats and drinks but sleeps a little more that the others. I guess I just want to see if there is anything I should do for this one?? Can some just take their sweet ole time growing and will catch up or should I just expect this one to not make it?? What has been your experience? here is a pic when I first got them runt is the second one in runt is the second one in here too. one week later I just want to do whatever I can to help him along??