So, Ms Scarlett had her third litter four weeks ago, probably today. I got back from NC four weeks ago tomorrow and discovered that she had her litter either the day before or the night before and was still with Caesar.

I quickly separated her from Caesar and put her into her own maternity tank and she's raised these babies wonderfully.

So, last night I notice that she looks incredibly pregnant again (but 28 days after being with Caesar).

Do rats "retain" sperm at all? I would have thought that if he got her pregnant in that 24 hours, I would have seen babies a week ago.

I even checked my calendar to make sure that I wasn't losing my mind - yup - this litter is four weeks old (and she is now in a new maternity tank by herself).

I like to rest my females after their litters are weaned or taken from them, so I'm a bit upset that she's having back to back litters, but she appears to be maintaining good weight. I don't have any other nursing moms at the moment (in fact, Foxy and Twix have been with Caesar since she was pulled from him, and neither of them show signs of pregnancy yet).