chameleons generally hear really low frequency noises, somewhere around 200hz. veiled chameleons use vibrations to warn other chameleons on the same tree. it scares the crap out of you the first time they do it when theyre on ur hand
Veileds are not the only chameleons that vibrate or communicate by vibrations. Here's a partial list of others that vibrate....
" * B. decaryi (E. Edwards)
* B. thieli (E. Edwards; L. Horgan)
* C. dilepis (K. Barnett)
* C. Johnstoni (F. LeBerre)
* C. melleri (A. Banks)
* C. Oweni (F. LeBerre)
* C. senegalensis (K. Barnett)
* F. ousteleti (multiple ADCHAM list members)
* F. pardalis (multiple ADCHAM list members)
* R. brachyurus (J. Mease)
* R. brevicaudatus (J. Mease)
* R. kerstenii robecchii (E. Edwards; J. Mease)
* R. uluguruensis (J. Mease)" http://adcham.com/html/taxonomy/species/chcalyptratus.html