Normally when one rat from mine was going to give birth I put her in a ten gallon tank until I fed of the babies or they got weaned. But that's when I had 6 rats now my cousin gave me his 3 slot rack so I decided to put them in there. The top row I put 1.4 ratio two of them gave birth for their first time today and are doing a good job I left and when I came back a female rat who I fed off her babies like a week ago took like 6 from the two. Is it alright for her to do this and how long after they lose their babies do they lose their milk.