Thank you both for such quick responses! It's tremendously appreciated!

Just a quick response to Charla - no, from everything I understand it was NOT Chytrid, just lungworms. I insisted that they test for that in the necropsy, and when the vet called, she did not mention it reading the final report.

Since posting, I actually contacted two other vets (familiar with lungworms) to find out if they've ever seen those bizarre spots with other "lungworm" cases. Nothing I've read on lungworms mentions anything about skin discoloration!

Thank you so much for further explaining the fecal culture situation! When we initially brought home Igby/Kibbits from the petstore, I had fecal cultures done (that was nearly a year ago with a different vet), and when nothing had a positive hit, I thought I was in the clear. : ( It's just so heartbreaking to have fought so hard to save Igby/Kibbits (doing all those tests/cultures/radiographs, putting them through so much with antibiotic shots, etc.) and now know that the problem could have been so easily solved months before it became an issue. While I'm sad that we didn't know enough to save Igby/Kibbits, I'm so glad that we know now for our three companions.

All three frogs (Quibble, Ori, and Boris) have a vet appointment tomorrow to get "deworm" treatment as a precaution and get another round of fecal cultures. Better safe than sorry! I certainly don't want to go through these last few months again. : (

Thank you again for all your help. I can't begin to tell you how much this forum has helped me.