a common green forest lizard on top of a small tree stem in a weird posture

green forest lizard calotes common top tree stem weird funny posture animals agamid sri lanka head concave forehead headscales sharp spines dorsal scales crests adult males neck eye bright coloration stripes changeable throat stripe lizards lankan animal nature macro reptile wild tropical portrait skin wildlife spine closeup beautiful trunk sitting asia predator spiny cute background posing watching fauna natural environment creature ceylon looking