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.
Sand goanna sand goanna does consume smaller species of monitors: Ackies, rock monitors and other dwarf species are often found and eaten. It is common to see a Gould's disturbing rock piles in an attempt to flush out any "Odatria". It lays its eggs in termite mounds to protect them from the harsh desert climate. Like all goannas and snakes the sand monitor has a forked tongue, with which it "tastes" the air. Scents are picked up on each side of the fork which, when retracted, brushes over an area in the mouth called the Jacobson's organ, which identifies on which side