Found in warm and tropical forests and savannas, these immense lizards are a deadly threat to the unsuspecting traveler. When they aren't sleeping or stalking prey, giant frilled lizards bask in the sunlight for hours at a time. Explorers sometimes mistakenly think them related to dragons due to their large size, elaborate neck frills (which, when displayed in a show of aggression and dominance, can be mistaken for wings), and ferocious hissing vocalizations used to frighten away creatures too large to eat.