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The Varanidae are a family of lizards in the superfamily Varanoidea and order Anguimorpha.The family, a group of carnivorous and frugivorous lizards, [1] includes the living genus Varanus and a number of extinct genera more closely related to Varanus than to the earless monitor lizard (Lanthanotus). [2]
Monitor lizards have a high aerobic scope [23] [25] that is afforded, in part, by their heart anatomy. Whereas most reptiles are considered to have three-chambered hearts, the hearts of monitor lizards – as with those of boas and pythons – have a well developed ventricular septum that completely separates the pulmonary and systemic sides of ...
This allows their hearts to temporarily function like a four chambered heart, which in turn ensure that oxygenated blood is quickly distributed to the body without also flooding the lungs with high-pressure blood. [14] The highly efficient circulatory system, combined with their strong limbs, allow true monitors to become powerful sprinters.
Varanoidea is a superfamily of lizards, including the well-known family Varanidae (the monitors and goannas). Also included in the Varanoidea are the Lanthanotidae (earless monitor lizards), and the extinct Palaeovaranidae. Throughout their long evolutionary history, varanoids have exhibited great diversity, both in habitat and form.
Monitor lizards are traded globally and are the most common type of lizard to be exported from Southeast Asia, with 8.1 million exported between 1998 and 2007 for the international leather market. [35] Today the majority of the harvesting of feral water monitors occurs in Southeast Asia, in Indonesia, and in peninsular Malaysia. [36]
The perentie (Varanus giganteus) is a species of monitor lizard. It is one of the largest living lizards on earth , after the Komodo dragon , Asian water monitor , and the Crocodile monitor . [ 3 ] [ 4 ] Found west of the Great Dividing Range in the arid areas of Australia, it is rarely seen, because of its shyness and the remoteness of much of ...
Eromanga, Queensland. A species of Varanus, lizards known as monitors and goannas, that is found in a variety of habitat.Due to the taxonomic uncertainty during the twentieth century the species form and behaviour has included taxa later recognised as distinct species, this includes V. rosenbergi, formerly treated as a subspecies and later elevated, and V. panoptes, described as a new species ...
It is the second longest African lizard after the Nile monitor. Mature specimens typically measure 0.85 to 1.5 meters (2 ft 9 in to 4 ft 11 in). [8] [10] The head and neck are the same length, and are distinct from each other. [11] The bulbous, convex snout gives an angular, box-like appearance.