Animalia > Chordata > Squamata > Varanidae > Varanus > Varanus olivaceus

Varanus olivaceus (Gray’s Monitor Lizard; Gray’s Monitor Lizard)

Synonyms: Varanus grayi; Varanus ornatus (heterotypic)

Wikipedia Abstract

The Gray's monitor (Varanus olivaceus) is a large (180 cm, >9 kg) monitor lizard known only from lowland dipterocarp forest in southern Luzon, Catanduanes, and Polillo Island, all islands in the Philippines. It is also known as Gray's monitor lizard, butaan, and ornate monitor. It belongs to the subgenus Philippinosaurus. It is largely arboreal and extremely shy.
View Wikipedia Record: Varanus olivaceus

Endangered Species

Status: Vulnerable
View IUCN Record: Varanus olivaceus

Attributes

Adult Weight [1]  9.129 lbs (4.141 kg)
Birth Weight [1]  25 grams
Female Weight [1]  6.312 lbs (2.863 kg)
Male Weight [1]  11.949 lbs (5.42 kg)
Weight Dimorphism [1]  89.3 %
Egg Length [1]  2.795 inches (71 mm)
Egg Width [1]  1.496 inches (38 mm)
Gestation [1]  8 months 20 days
Litter Size [1]  7
Litters / Year [1]  1
Maximum Longevity [3]  15 years
Reproductive Mode [2]  Oviparous
Snout to Vent Length [1]  24 inches (62 cm)
Habitat Substrate [2]  Arboreal, Terrestrial

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Luzon montane rain forests Philippines Indo-Malayan Tropical and Subtropical Moist Broadleaf Forests
Luzon rain forests Philippines Indo-Malayan Tropical and Subtropical Moist Broadleaf Forests

Biodiversity Hotspots

Name Location Endemic Species Website
Philippines Philippines Yes

Prey / Diet

Ficus altissima (false banyan)[4]
Ficus balete[4]
Ficus benjamina (weeping fig)[4]
Ficus merrittii[4]

Prey / Diet Overlap

Range Map

External References

Citations

Attributes / relations provided by
♦ 1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 2Meiri, Shai (2019), Data from: Traits of lizards of the world: variation around a successful evolutionary design, Dryad, Dataset, https://doi.org/10.5061/dryad.f6t39kj
♦ 3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 4"Fig-eating by vertebrate frugivores: a global review", MIKE SHANAHAN, SAMSON SO, STEPHEN G. COMPTON and RICHARD CORLETT, Biol. Rev. (2001), 76, pp. 529–572
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0