The term 'Monitor Lizard' refers to a group of large lizards in the genus Varanus. The most well-known species is the Goanna, which is native to Australia and is the largest lizard in the country. Another species, the Uran, is found in Southeast Asia and is known for its long tail. Finally, the Varan is found in Africa and is the smallest of the monitor lizards. All three species are carnivorous and have long necks and powerful claws.