Three large goanna species occur in south-eastern South Australia; the Heath Goanna, Sand Goanna and Lace Monitor. Goannas are a group of mostly large lizards found in Australia. They range in size from the diminutive Australian Short-tailed Pygmy Monitor Varanus brevicauda (total length of 25 cm), to the largest lizard living today, the 3 metre-long Komodo Dragon of Indonesia, Varanus komodoensis.. Visit us to know more. There are around 20 species of goanna, 15 of which are endemic to Australia. Goannas: Introduction Lace Monitor. Komodos can reach lengths of up to 10 feet (3 meters) and weigh approximately 154 pounds (70 kilograms) on average. The monitors are all very similar to each other, the main differences being their sizes, proportions, and distribution. Goanna is the name given to any of the various Australian monitor lizards of the genus Varanus, as well as to certain species from Southeast Asia. There are 69 living species of goanna and most of them are carnivores. Know all the things about the wonderful Lace Monitor including diet, habitat and reproduction at the Australian Reptile Park. Facebook; The Heath Goanna and Sand Goanna are similar in size and patterning and can be easily confused. A Komodo Dragon is, in fact, a member of the monitor lizard family, or varanidae. Visit us to know more. Goanna. A Goanna is a variety of monitor lizard found on the Australian mainland and some of the islands, but not in the island state of Tasmania. Although monitor lizards are also found in Africa and Asia, the term ‘goanna’ usually only applies to the Australian species.However, Southeast Asian monitor lizards are sometimes referred to as goannas too. Know all the things about the wonderful Lace Monitor including diet, habitat and reproduction at the Australian Reptile Park. The Komodo dragon is the biggest monitor lizard. The Lace Monitor is larger, easier to distinguish from the other species and has a more restricted distribution in South Australia. There are actually 30 species of goanna… Is the Lace Monitor bigger than the Komodo dragon? Goannas are monitor lizards – lizards in the genus Varanus. A Goanna is a variety of monitor lizard found on the Australian mainland and some of the islands, but not in the island state of Tasmania. They are a varied group of carnivorous reptiles that range greatly in size and fill several ecological niches. In fact, it’s the largest living lizard on Earth!