I plan on getting a scale, but I'm also budgeting very tightly for a newborn right now. I don't think the size is an issue, though as she ate them fine for months before she stopped eating. I'm only offering monthly because I read to do so while they're fasting like this (she hasn't eaten since October). I just wish I knew how much she weighed before this happened so I could tell if she really lost weight... Word from the friend she lives with is that she might have eaten, though. I've never tried leaving the thawed rat in the enclosure, so I don't know what the chances are she just hid it, but my friend said she didn't see the rat anymore last time she went upstairs. Would a snake hide a rat instead of eating it by chance?