I got a breeding pair of siamese rats on 10/10/11 and on 10/11/11 I know they hooked up at least twice that night because I saw it. After that she went into her hide I watched them for a couple minutes and she didn't come out again at least while I was watching. Basically I was wondering since they only breed when the female is in heat and since I know they hooked up at least twice surely they hooked up several times during the night and into the morning and she is pregnant right?I got another female on 10/14/11. I know that they bred the one night and he bred with one or the other a few nights later and I haven't really been watching them so I don't know if they have continued to breed. They are six-eight months old. I heard from the lady I got them from that rats breed like crazy and she's never had any problems with any of her mature rats not breeding. The one you can barely see a couple nipples but the one with the slightly bigger belly you can see a few of them and I looked at pics of female rats and you can't really see them at all when they're not pregnant. She looks pregnant to me and one of my questions is even if she's not pregnant right now they're rats and they breed like crazy and i'll have babies eventually right?