Just an update.

I was watching Wiggles last night, and saw him realign his jaws. I saw him show interest in the rat yesterday, but I think he was intimidated by the size. I went and got a mouse just now, pre-scented, offered, and he took it.

So, now I'm almost convinced that there is something wrong with the small rat. The medium rat, I don't think there's anything wrong with him, just Snickets being picky, and/or the temp drop messed with her. We've been having crazy weather, so I'm sure the ambient temps dropped a little overnight. They're back up though.