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This turned out to be a banded colour phase of the lace monitor that coexists with normal-coloured individuals, and is either autosomal dominant or codominant genetically. [10] It is sometimes called the Bell's phase lace monitor. [10] The species is commonly known as lace monitor, tree goanna, or lacy. [11]
Yellow-spotted monitor (left), lace monitor (right) This ground dwelling monitor species, somewhat resembles the widespread sand goanna (Varanus gouldii).Large, dark spots appear in rows along its back, becoming especially distinct at the center of the back where they are interspersed with smaller and paler spots.
The lace monitor is the second-largest of all goannas, reaching lengths up to 2 m (6.6 ft). Other more common tree goannas, such as the Timor tree monitor ( V. timorensis ) and mournful tree monitor ( V. tristis ,) do not grow to quite such lengths, typically a maximum of 61 cm, nose-to-tail.
Perenties can grow to lengths of 2.5 m (8 ft 2 in) and weigh up to 20 kg (44 lb), possibly up to 3 m (9 ft 10 in) and 40 kg (88 lb), making it the fourth-largest extant species of lizard (exceeded in size only by the Komodo dragon, Asian water monitor and crocodile monitor).
The 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 monitor 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.
The stripe-tailed goanna (Varanus caudolineatus), also known as the line-tailed pygmy monitor [1] is a semi-arboreal species of monitor lizard native to Western Australia. [ 2 ] Description
Spencer's goanna has unusual defensive behaviour, where it feigns death when threatened; the body is flattened against the ground, one hind limb is extended while all other limbs held close to the body, and the tail is contorted into a wavy shape. The head is kept up to observe the threat, feigning death until the threat has left the area.
The colouration of V. keithhornei is dark black on the upper side. It has moderately big and smooth head scales. Its tail has no visible keel. [6] The canopy goanna is small for a monitor lizard, reaching a total length up to 77 cm, [9] but more robust than other species of the V. prasinus species complex, and can be further distinguished from them by its colour and the conical throat scales.