Chameleon Chester eye face panther zoo lizard mating ritual reptile throat swelling animals green Afrika animal Kenya leaf nature ba1969 color hand drawn illustration leaves amphibian Iguana iguane lezard lizards madeira bright bulbous-eyes Camouflage camouflaged casque chamaeleo-calyptratus closeup cold-blooded color-changes coloration colors colour-changes colours cone-headed-chameleon ear exotic fauna gentle head helmet herpetology independent-swivelling insectivore insectivorous legs middle-eastern mouth nose observant patchy reptilian Saudi-Arabia scales skin spiky spines surface surfaces swivel veiled-chameleon Yemen Chamaeleo calyptratus claws thorns tropical Veiled Chameleon