Varanus insulanicus, also known as Baritji, is a medium-sized monitor lizard with a typical snout-vent length (excluding the tail) ranging from 26-29cm in adults.

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Physically, Baritji closely resembles Varanus acanthurus in body shape and possesses a rounded spiny tail. Its distinguishing features include a bright yellow throat and the absence of neck stripes.

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In terms of coloration, Baritji individuals do not exhibit significant variations. The base color ranges from light brown to reddish brown, with some developing a more olive color on the sides as they age. Younger animals display more pronounced dark brown to black patterning or ocelli, which tend to break up in adults.

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Baritji is found exclusively in the northern region of the Northern Territory, inhabiting tropical savannah and open woodlands.

They are terrestrial, rock-inhabiting species (saxicolous) and are commonly found near rock outcrops and stony hills. They seek shelter under large rocks in shallow burrows or wedged into rock crevices, utilizing their spiny tail for protection. However, given their wide range, they have been found in other locations such as hollow logs and termite mounds, depending on the environment.

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In captivity, Baritji exhibit behavior similar to Ackies. They can become habituated to human interaction and tong feeding, although many individuals may be slightly more reserved.

They are relatively easy to keep and can thrive in an average-sized enclosure without requiring much vertical space.

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Enclosure: For an adult pair, it is advised to provide a minimum space of 120cm in length and 60cm in width/depth.

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Substrate and furnishings: Suitable substrates include soil, sand, or large pebbles. It is important to provide plenty of hides such as hollow logs and flat rocks for burrowing or hiding. Creating a tighter space within the enclosure will make the animal feel safer.

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Temperatures and lighting: Adequate UVB lighting is crucial. A basking spot with a bright lamp directed onto a rock or tiles should maintain a temperature range of around 50-65°C. The rest of the enclosure should provide an ambient heat gradient ranging from 28-33°C during the warmer, active months.

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Humidity: Baritji will benefit from being kept in an enclosure with higher humidity during the warmer months. This can be achieved through regular misting and the inclusion of a large water dish. Providing a humidity hide is also recommended.

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Feeding: The bulk of Baritji's diet should consist of crickets, wood roaches, and other insects, with regular dusting of calcium powder and vitamin powder or gut-loaded feeders. Occasional additions to their diet can include pinkie mice, chopped mice, lean turkey or chicken mince, chicken hearts, boiled chicken egg, quail egg, and chopped day-old quail. Offering a variety of food sources is important for their overall nutrition.

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Life span: Varanus insulanicus, or Baritji, is typically recorded to have a lifespan of 8-10 years in captivity.