Monitor lizards, genus Varanus, are members of the family Varanidae. Varanus is a group of largely carnivorous lizards which includes the largest living lizard, the Komodo dragon, and the crocodile monitor. Almost all monitor lizards are carnivorous, although a few are also known to eat fruit. They are oviparous, laying from 7 to 37 eggs, which they often cover with soil or protect in a hollow tree stump.
Usually large reptiles, although some can be as small as 5 inches in length, they have long necks, powerful tails and claws, and well-developed limbs. Most species are terrestrial, but arboreal and semi-aquatic monitors are also known.