Bosc Monitor Care Sheet (Varanus exanthematicus)

Bosc monitors are one of the best larger pet lizards that can be kept in captivity. This care sheet reveals how to look after Bosc monitors - a perfect read for all reptile enthusiasts, or those looking for a pet lizard.

Bosc monitors are one of the more popular large lizard species kept in captivity. Hailing from Eastern and Northern Africa, the bosc monitor is capable of growing up to five feet (150cm) in length, though in reality most specimens top out at a more modest three to four feet in length (90-120cm).

While these certainly aren’t the biggest lizards available to reptile keepers, they’re certainly a far larger and more impressive species than the more commonly-kept bearded dragon or leopard gecko.

Together with their impressive dimensions, be aware that their teeth and claws are also in proportion of their body. A scratch or a bite from a bosc monitor is therefore likely to be much more uncomfortable than from a Green Anole! That said, a properly-tamed bosc monitor can become silly tame, posing no major risk for their owner.

Their potential size, combined with a fearsome arsenal of tooth and claw – not to mention a powerful tail – therefore mean that the bosc monitor is generally not a good pet lizard for beginners.

For reptile keepers with some experience, however, looking to upgrade to something a little bit different to the usual species seen in reptile stores, the bosc monitor can make an ideal introduction into the larger and more impressive lizards.

In this bosc monitor care sheet we’ll discuss everything you need to know in order to safely house, feed and care for your first pet bosc monitor…

Wild Habitat

Hailing from the arid regions of Northern and Eastern Africa, bosc monitors may be found across a wide range, including Ghana, Senegal and Ethiopia.

They are typically ground-dwelling lizards, though may occasionally climb when the desire arises. Far more commonly, bosc monitors use their sharp, elongated claws to dig. In doing so they may create a hole in which to hide, or may unearth potential prey.

Bosc monitors are carnivorous lizards, naturally hunting throughout the day where they feed on whatever live prey they can capture. With their forked tongues, they prowl the wild areas of Africa, looking almost like small komodo dragons, tasting the air for any tasty morsels. In the wild this is likely to consist primarily of a wide range of life invertebrates, supplemented with the occasional rodent or eggs from ground-nesting birds.

When it comes to bosc monitor care the best solution is to try and mimic this natural lifestyle as far as is possible in captivity. This means that a large cage will be required to enable these active lizards to explore and hunt.

A very hot basking area is also recommended, to help mimic the effects of the sun’s rays warming the earth. A drier environment is also preferable to more humid atmospheres, which can lead to health problems in bosc monitors.

Lastly, giving your monitor the opportunity to dig around in their substrate, and even to take a nice long bath, will also help to add interest and to foster more natural behaviour in their captive environment.  

Housing Bosc Monitors

Many people are taken in by how cute (and relatively inexpensive) baby bosc monitors are. They can often be purchased for similar prices to bearded dragons, and being less than a foot in length the chunky babies can be very appealing indeed. It is important, however, to appreciate just what you’re getting yourself into before buying a baby bosc monitor.

While young bosc monitors will be happy in a traditional wooden vivarium or large glass tanks, adult specimens will require a far more roomy enclosure. Youngsters can be successfully housed in a tank measuring roughly three feet (90cm) in length, and eighteen inches (45cm) in depth.