Dear Customer (name blocked for privacy),
I would agree that your chameleon may be slightly dehydrated, but the signs you are describing are classic for chameleons showing early stages of metabolic bone disease. I also agree that getting additional fluids into the animal is important, and when your veterinarian administers the other medications and supplements I mentioned previously, he/she will most likely administer fluids via the subcutaneous, intravenous or intraperitoneal route, as these ways offer a much better rate of absorption than soaking or oral intake. The idea of soaking is good, once the initial therapy is taken care of, but if you try to treat the problems he's having at home, you will almost surely lose the battle. Again, the signs you've described are classic. I've seen this in patients and I've owned one myself (a rescue animal).
I also agree with some seasonal variation, but often that seasonal variation of appetite and activity is not too pronounced in captivity. If it were just seasonal anorexia, you should not see the swollen eyes, tongue and lethargy.
One more note. I'd make sure that you have a suitable limb/perch or hiding spot on the bottom of the cage/enclosure. As this process progresses, they are much less coordinated and tend not to be able to climb as well. He'll need a place on the bottom that feels safe.
I'll be happy to assist you if you would like further information.
Best of luck with him. There is a lot of good information being offered here, but none will be of use if you don't combat this problem quickly.
Thank you.
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Tonya Clauss, DVM, MS
