Mouth open

Hi All

my veiled male chameleon occassionally keeps his mouth open for a few minutes at a time. does this mean anything?

he is 6 months old
eating / drinking well

Without any more information, I'd say there is a heating issue. However, mouth gaping could be caused by more serious conditions. If you fill this out, I'm sure the on of our experienced keepers will chime in to help.

Cage Info:
Cage Type - Describe your cage (Glass, Screen, Combo?) What are the dimensions?
Lighting - What brand, model, and types of lighting are you using? What is your daily lighting schedule?
Temperature - What temp range have you created (cage floor to basking spot)? Lowest overnight temp? How do you measure these temps?
Humidity - What are your humidity levels? How are you creating and maintaining these levels? What do you use to measure humidity?
Plants - Are you using live plants? If so, what kind?
Placement - Where is your cage located? Is it near any fans, air vents, or high traffic areas? At what height is the top of the cage relative to your room floor?
Location - Where are you geographically located?

Chameleon Info:
Your Chameleon - The species, sex, and age of your chameleon. How long has it been in your care?
Handling - How often do you handle your chameleon?
Feeding - What are you feeding your cham? What amount? What is the schedule? How are you gut-loading your feeders?
Supplements - What brand and type of calcium and vitamin products are you dusting your feeders with and what is the schedule?
Watering - What kind of watering technique do you use? How often and how long to you mist? Do you see your chameleon drinking?
Fecal Description - Briefly note colors and consistency from recent droppings. Has this chameleon ever been tested for parasites?
History - Any previous information about your cham that might be useful to others when trying to help you.
Current Problem - The current problem that you are concerned about.

Might be too hot. What are the basking temps in the cage? and what wattage of bulbs do you use?

COuld be as simple as reducing the wattage of the heat bulb or something more serious. Fill out the info and we can be of better assistance.