knight anole (Anolis equestris) is a species of lizard in the Polychrotidae family, and the largest species of anole. Other common names include Cuban knight anole. It grows to a length of 13 to 20 inches (33 to 51 cm) including the tail. It is now widely introduced in South Florida where it reproduces and spreads readily.
Aggressive to anything that enters its territory, the knight anole will face almost any intruder it perceives to be a threat (from a distance). During its display, a lizard will sit high on all fours, gape menacingly, turn green, and perhaps bob its head.
the anole's aggressiveness seems to lessen to a certain degree. In communal terraria with other species of lizards it rarely attacks smaller lizards unless it is hungry.