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  3. Sand Monitor

One of the 6 monitors on WAnimals

Reptiles · Squamata · Varanidae

Sand Monitor

Varanus gouldii

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The sand monitor or Gould's goanna is one of the most widespread lizards in Australia, present across almost the whole continent. It digs deep burrows and actively hunts insects, reptiles, eggs and carrion. It is one of the species worst affected by the invasive cane toad: it dies poisoned when it tries to eat one, and its decline has altered entire ecosystems.

Weight

1.5 kg – 6 kg

Size

1 m – 1.6 m

Life expectancy

15 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Diurnal

Active mainly during the day.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Easy

SavannaTemperate forestDesert
3countries18parks6same family

Fun facts

  • The cane toad, invasive in Australia, is decimating it: it dies poisoned when it tries to eat one, and its disappearance has caused knock-on effects because it is a key predator in many Australian ecosystems.
  • Aversion learning is being trialled as a conservation measure: the monitors are offered small toads that make them ill but do not kill them, and the animals learn to reject them before the lethal adult toads arrive.
  • It digs burrows several metres long, and those tunnels shelter dozens of species of reptiles, mammals and invertebrates of the Australian desert.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (reptile)
Habitat and environment
Sandy deserts, savannah, open woodland and scrub across almost all of Australia
Sexual maturity
2 years
Gestation / incubation
180 days of incubation
Litter / clutch size
7 eggs

Sources consulted: https://www.iucnredlist.org/ | https://animaldiversity.org/ | https://es.wikipedia.org/

Where to find it

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The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 18.

Related species

Other species in the catalogue with the most in common with Sand Monitor — same habitat, park, country, tags or family.

Same taxonomic family
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Based on what we already know about sand monitor.

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See full glossary
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See its range on the interactive map→
KakaduAustralia
Uluru-Kata TjutaAustralia
Purnululu (Bungle Bungle)Australia
Nitmiluk (Katherine Gorge)Australia
LitchfieldAustralia
Grampians (Gariwerd)Australia
Ikara-Flinders RangesAustralia
Shark BayAustralia
KarijiniAustralia
Cape RangeAustralia
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CountriesAustralia
ParksKakaduAustralia
TagsCarnivore
Carnivore
Diurnal
Solitary
Reptile
Savanna
Temperate forest
Desert
Australia
Indonesia
Papua New Guinea