Girgit is the Hindi name for the animal which changes its colour often.
a garden lizard which has prehensile tail, protrusbile tongue, grasping toes and often changes colour then
its zoological name is: Genus: Chamaeleo: Species:chamaeleon
It is called Chamaeleon.This lizard is common in India.
The name of American chameleon is Anolis carolinensis.