Goanna in Australia likened goannas to the South American lizards.. Over time, the initial vowel sound was dropped. A similar explanation is used to link possum to the American opossum. Another possibility is that the name might have derived from the South African term for a monitor lizard, "leguaan", as the Cape of Good Hope was a popular refresher stop for immigrant ships to Australia from Britain. For a list of all monitor lizards of the genus, see Complete list of genus "Varanus". The following are found in Australia. For the most part, in common names, "goanna" and "monitor" are interchangeable.
Goanna koalas) as a tourist scarer, probably more convincing due to the reptiles' carnivorous nature and fearsome appearance. A common tale was that the bite of a goanna was infused with a powerful, incurable venom. Every year after the bite (or every seven years), the wound would flare up again. For many years, herpetologists generally believed goannas were nonvenomous, and lingering illness from their bites was due solely to infection and septicaemia as a result of their saliva being rife with bacteria from carrion and other food sources. However, in 2005, researchers at the University of Melbourne announced that oral venom