Mrk, Congrats on your new purchase. Prepare yourself for a lot of research, a lot of money spending, a lot of worry- but more importantly, an awesome reptile. Remember to post photos after a few days. Wait a while for him to get settled into his new home before sticking a camera in his face, just let him be for the first few days, do your duties, and watch from afar. You can upload the photos here to the Chameleon Forum gallery for free photo hosting.
If you are looking for tips photos are great. Users will be able to point out ideas to make your life simpler, or your chameleon happier. Make sure to provide a live plant- they really do great things for chameleons.
Mouth open is usually a sign of overheating. Just as a dog sweats with his tongue a chameleon evaporates moisture from the mouth and lungs. You need to check your temperatures at the basking area (The branch under the heat light) and also the temperature farther away from hte light from an area that would represent the "ambient Temperature". This will help determine if the heat is too intense for your new boy.
As far as hydration, don't panic. The tell tale sign of dehydration is sunken eyes. The eyes should appear to be rather bulbous and protrude a good distance out of the eye socket. If the eyes are flat, then you ll need to increase the water intake of your chameleon. If the eyes are inside the eye socket then it is much more serious and further assistance must be taken in re hydrating the chameleon. There are several ways that you can provide water for drinking. You may have to combine several of these to get the ideal setup. Please view the links...
Watering and Drainage Strategies By Jason Descamps
-Hand Spray Bottle misting several times repeated over the day. In my experience, it usually take a chameleon some minutes to before stimulated to drink, so a mister with a pump and pressure buildup is very useful. Pump it up 20 times and spray for a few minutes straight. The ones that spray once with every trigger squeeze will feel horrible to use after you have purchase a pump up pressure one.
-(Automatic) Misting systems. The more expensive route, but in my opinion by far the best on. Increases both Humidity and water droplets to drink. It also is great for the plants. Can be put on timers to run while you are out of house.
Misting Systems by John W. Lucas
-Drippers. There are several commercial drippers on the market, but placing a bottle, tub, reservoir of some sort, etc, above the cage and having it drip onto the plant leaves before hitting falling into another "catching" reservoir. Any container can be converted to do this. Can drip for several hours a day.
-Humidifiers. I prefer the cool air humidifiers (vaporizers) because the mist tends to descend rather than just rise and disperse quickly. Humidifiers can be altered to give off a mist than runs through tubes and falls into the hop of the cage. SOMETIMES this mist will collect of the leaves and form droplets for chameleons to drink, but its use for providing drinking water is dependant of the strength of the humidifier to provide enough mist and humidity build up, and also the way you have the tubing set up.
Humidifiers and Chameleon Enclosures By roo
-Showering. You can take your chameleon on a plant and place it in a stand up shower and rebound the mist off the wall. They get used to being in the shower and most grow to enjoy it. This is usually done sparingly, and in addition to other methods of providing water. Good for intense re hydrating, helping shedding and washing out the eyes.