Male Brown Basilisks can reach 80 cm (32 inches) in length and females are somewhat smaller. Their three crests are on the head, along the body and along the tail. They usually appear in brown or olive brown with black stripes. The stripes are usually only on the flanks and on the dorsal crest. They also have a white stripe, which extends from the eyes to the rear legs. The males have a larger crest than the females.
They are native to Panama, Belize, northwestern Colombia and Costa Rica, but have been introduced into the U.S. state of Florida as a feral species.
Along with the Common Basilisk they have the nickname "Jesus Lizard" because when fleeing from a predator, they are very fast and can even run on top of the water. Basilisks actually have large hind feet with flaps of skin between each toe. The fact that they move quickly across the water, aided by their web-like feet, gives them the appearance of "walking on water".