I do agree with the tiny ones it requires extra care and caution. My 5 mth. old baby girl is 1.8lbs. I have 2 more they are closer to 4lbs. When they all start playing I have to watch they don't get to rough with her, but sometimes I have to pull her off them
When they get her mad they better watch out. I always make sure she is getting enough to eat. I have had her since 7wks. old and thank god I haven't had to deal with low sugar. She has a good appetite.