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Green anoles have a stereotyped set of behaviors. Male anoles perform rituals of dominance and territoriality. They show their dominance by bobbing their heads, usually through pushup-like movements.
They also flare their dewlap. When threatened by another male, the opponents begin with head bobbing and flaring.
Then they extend their throat (different than dewlap) to enlarge their body profile, they turn lateral to their opponent, showing the side profile of their body.
They also erect crests along the back, and form an eyespot.
These performances are intended to intimidate the other anole.
The loser of the confrontation performs submissive head bobbing and retreats to a different territory.