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.
Australia (continent) can be attributed to the continent's long geographic isolation, tectonic stability, and the effects of an unusual pattern of climate change on the soil and flora over geological time. Australia and its territories are home to around 800 species of bird; 45% of these are endemic to Australia. Predominant bird species in Australia include the Australian magpie, Australian raven, the pied currawong, crested pigeons and the laughing kookaburra. The koala, emu, platypus and kangaroo are national animals of Australia, and the Tasmanian devil is also one of the well-known animals in the country. The goanna is a predatory lizard native