Fantastic pictures by Krystal Tolley.
Read the paper that inspired this here:
Dollion, A. Y., Measey, G. J., Cornette, R., Carne, L., Tolley, K. A., da Silva, J. M., Boistel, R., Fabre, A.-C. and Herrel, A. (2017), Does diet drive the evolution of head shape and bite force in chameleons of the genus Bradypodion?. Funct Ecol, 31: 671–684. doi:10.1111/1365-2435.12750