“Our study demonstrated that among the chameleon observations in Italy, only those from Apulia and Calabria refer to reproductively active C. chamaeleon populations. To our knowledge, all the other findings are referable to released/escaped individuals”…
https://www.tandfonline.com/doi/full/10.1080/11250003.2016.1186236
https://www.tandfonline.com/doi/full/10.1080/11250003.2016.1186236