Why do Yemen Chameleons have such high casques?

I’m going to guess because they’re from hot environments so it’ll help every little bit of condensation funnel to their mouths as possible?
 
It is very interesting...
One of the most prominent festures of the Best known chameleon in caltivity
And prople
Jave no clue whatnis rhe meaning of their casques...
 
Nono, nothing like rhat
Then someone needs to inform the San Diego Zoo.
The casque acts like a water collector: at night, droplets of moisture roll down the casque and into the chameleon's open mouth!
https://animals.sandiegozoo.org/animals/chameleon
Also:
https://www.chameleonforums.com/threads/purpose-of-the-casque.103139/#post-946668

According to another expert:
The function of casques is primarily in the process of interspecific identification of a potential mating partner thanks to the phenomenon called character displacement. Based on differently shaped casques and other cranial protuberances and skin derivates, the females can identify the right sexual partner of own species and refuse any reproduction attempts of a male belonging to another species.
https://www.chameleonforums.com/threads/casque-for-water-storage.171393/#post-1517072
;)

Amazing what one can find in the archives.
 
Back in the early days i thought the mouth muscles went to the top of the casque. But over the years ive seen tons of males with the casque burned down to the point it looks like a girl, and mouth works fine.

11e7cc35c63cb6cc8b9d1333c982675a.jpg
 
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