| Sauria or Iguania|
| Basiliscus, Corytophanidae, Brown basilisk, Scaled reptiles, Common basilisk|
The western basilisk, or red-headed basilisk (Basiliscus galeritus), is a large species of corytophanid lizard from northwestern South America.
Western basilisk Wikipedia
It inhabits forests at altitudes of 0–1,600 m (0–5,249 ft) in western Colombia and western Ecuador in South America. Earlier reports from Central America are mistaken and actually refer to young of the closely related common basilisk. The western basilisk is common and not threatened.
Males reach a length up to about 77.5 cm (30.5 in), while females reach about 63.5 cm (25.0 in). Its body color is olive-green with a reddish-brown underbelly. The throat is white to yellow. On the back it has a small crest similar to that of young individuals of the common basilisk. It has narrow white stripes on the sides. It has no back flap. The adult males bear a round head flap/crest.
The western basilisk has been introduced to Gorgona Island, Colombia. This species is not native to the island, and thus, is endangering native species that reside on the island, such as the endemic blue anole (Anolis gorgonae).