I purchased 2.4 rats 3 weeks ago and I already have babies 1 mom had 12 born 12/1/08 and the other young mom had 4 born 12/3. But question, the 2 mothers are together an the older mom keeps taking the babies for herself but the younger mom goes and tries to get them back. Should I be worried about this or should I just leave them alone? I just want the all to do well.