Hi Kim,
I'm afraid the photos we took at the time are not very clear, but this is all we have:
You should just be able to see in the photos an almost translucent sac located in the region of the cloaca. There is a fuller description earlier in this thread, but just to recap what we had, it was a small (4-5mm) translucent sac, in which blood vessels were visible. This translucency is apparently a good sign, as it indicates the tissue is not bleeding or dying.
I think it is important that, if Spunky has such a prolapse, you consult a vet as soon as you can. Chances are they won't be able to help directly, even if they try, but they may be able to refer you (depending on your location) to a small animal hospital. We were lucky with our location near the Dick Vet, but I know of at least one other equivalent hospital in England.
If Spunky is continuing to eat and appears to be otherwise in good condition, then you have the best possible start for a recovery. I hope Spunky doesn't have a prolapse - it's a very distressing condition.
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Jenny and Katy,
Our axolotls produce solid, brown-to-russet faeces, though it tends to break apart when disturbed. When Peely was recovering from her prolapse, her faeces was generally 'wet', stringy and/or 'dusty'. When they were younger, the faeces was much less solid.