unless you viv is HUGE you will need to separate the males. Even if they don't seem to show obvious signs of stress it will be happening in their little cham bodies and minds
The fact that you got them from a pet store means they are most likely wild caught so you need to quarantine the new one anyway and get a fecal done to insure it has no parasites and if so treat it (by the vet) I assume you have had your other two checked?
I had, and lost, a trio of leaf chams and know how sensitive they can be and that it is even more difficult to determine problems in them than the bigger species.
look at it this way, now you can get your new male a girlfriend and have 2 couples!
lele
>>3 months ago, I had purchased a pair of pygmy chameleon and recently add one more to the group. Originally, my plan was to add an addition female but unfortunately it comes up with a male instead (it was the last one in the pet shop). Now the question is should I separate the two males? Or any advise of how to kept two males in the same vivarium without stress them?
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0.1 veiled - Luna
0.2 green anoles Jaida & Jetta
0.1 brown anole - Jamaica
0.2 house geckos - Gaia & Tia
0.2 felines - Kyndra and Líta