Large enough to notice, I suppose.
If it's that minuscule of an amount, I'm sure it's just some anal mucus or at least something unimportant. Perhaps she's preparing for that poop.
I didn't realize it was such a small amount.
It could have something to do with shedding too. I'm not entirely sure, but I wonder if the oils that are secreted for shedding might have something to do with it.
I'll look some things up. I would keep an eye out for it more, but I can't see it being unusual to find a small amount of mucus within the cloaca when there are tons of mucus secreting epithelium right there.