? in relation to birthing mother rats?

ok so i got 2 adult female rats that give birth a few months ago, at around 3 months the babies were eating food and water so i put them contained by theyre own cage and kept the 2 adults together in theyre own cage

powerfully while all were together the 2 adults got pregnant, consequently one started to fight with the other so i put the peacefull adult surrounded by with the babies, then last dark the fighter had her babies and seems more peacefull and close to her old self now, the other is close to droping hers and the older babies are a bit too crazy and hyper cause her to stay in a corner...i was wondering if it would be a discouraging idea to put the ready to birth rat in near the already birthed rat in the same cage since she seem to have calmed down? id hate to hold to buy another cage for the two separete litters but will if i have to.

presently the first litter both females cared for the litter with no problems, so i was thinking possibly they might do the same this time but the differance is, now they are both gonna have theyre own litter and ive group they will fight over each others babies and get confused?

i breed rats for my snake and supplie a local pet shop next to rats for pets and feeders, all my rats are social, well cared for and love person handled, ive grown to love one as a pet and will never get rid of her :)
Answers:    I've never seen rats catch confused over babies. They will care for each others litter pretty indiscriminately however, they might fight and resort to ingestion the babies.
you need to set up another cage the rats will fight as okay as possibly kill the babies that belong to the other this time one already has babies and the other will soon so it will be a bad traffic all around, set up another cage.
also separate you male and womanly babies before those girls also get bred
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