Veiled open mouth after eating

[Ant3001]

This is my first chameleon so I'm not sure if this is a health issue or normal behavoir.

My two and half year old veiled, after eating will sit sometimes with his head held upwards and open his mouth really wide, sometimes even making a soft hiss. my biggest concern is if he is choking. He doesn't change colour or puff up so its not him being angry there has been no change to the amount he eats though as he has got older his tounge has become less accurate at catching crickets

I feed him standard crickets as a main diet.

As stated this is my first chameleon so it may just be me being over cautious about a normal behavoir

 

[Solid Snake]

Hello!
Welcome to CF!
Im glad you are here!

Its imperative to get straight to it.
You are describing a respiratory infection.
This is usually an easily treatable illness, if that is indeed what you are dealing with.
You definitely dont want it progressing any more than it is if he does have a RI.
In order to properly understand whats going on, Ill ask that you fill out the "how to ask for help form" which goes over all aspects of your husbandry, and the animal.
Please be as detailed as possible when filling it out.
We have many high level experts here that will be able to go over it, and tell you how to proceed.

Here is the form.
(pictures of your setup are invaluable if you can post them)


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.


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?


Current Problem - The current problem you are concerned about.


Pictures are helpful