A large, powerful African monitor that's cheap to buy and hugely demanding to keep well — frequently under-housed and overfed, so strictly for prepared, experienced keepers.
🔴 Advanced💪 Large & powerful🕳️ Deep digger⏳ 10–15+ years
Care difficulty
Advanced
Animal cost
£30–£150
Full setup
£300–£600
Adult size
90–120 cm
Lifespan
10–15+ years
Min. enclosure
Large custom (min 180×90×90 cm)
📋At a Glance
Savannah (Bosc) monitors are large, robust African monitors. They're inexpensive as babies, which leads to many being bought on impulse and kept in far-too-small setups on the wrong diet, causing obesity and early death. Kept properly — huge enclosure, extreme basking, deep substrate, insect-based diet — they're impressive, but they're an advanced, space-hungry commitment.
Best for: experienced keepers with serious space and commitment who understand how often this species is kept badly.
💷Costs & Getting Hold of One
The animal
£30–£150 — still cheap for a lizard that becomes huge and demanding, which is part of the welfare problem.
Full setup
£300–£600 for a large custom enclosure, powerful heating and deep substrate.
Ongoing costs
Moderate — insect-based diet (not endless rodents) plus high heat/UVB electricity.
Availability
Easy to buy (often wild-caught/farmed); hard to keep well. Buy captive-bred if possible.
These are minimums, not budgets. The low end still has to meet the animal's needs — proper UVB, a heat gradient, space and filtration are not optional extras. A vivarium alone can cost £250–£300+, and a tortoise's UVB lamp alone is often ~£100. Price the whole setup before you commit to the animal.
Buying tip: Be brutally honest about space before buying. Choose a captive-bred, alert animal and plan a large custom enclosure from the start.
🏠Enclosure & Where to Keep It
A large, powerful digger needing a big custom enclosure with very deep substrate.
Adult
Large custom — at least 180×90×90 cm (6×3×3 ft), bigger preferred.
Substrate depth
Deep, dig-able, moisture-holding substrate (a foot or more) for burrowing.
Furnishing
A large hot basking area, sturdy hides and a big water area.
Where to keep it
A warm, secure, dedicated space; they're strong.
They need a very hot basking zone (55–65 °C surface) and deep substrate — the two things most often missed, causing chronic ill health.
🌡️Temperature, Lighting & Humidity
Temperature
Basking surface 55–65 °C (localised), cool end ~26–28 °C, night drop. Powerful basking on a dimmer.
Moderate — dry surface, cooler humid deep substrate for burrows.
Bedding / substrate
Very deep dig-able soil/sand mix that holds a burrow.
🍽️Diet, Supplements & Feeding
An insectivore/carnivore — but overfeeding fatty rodents is the classic killer.
Staple
Primarily insects — dubia, locusts, crickets, worms — plus some whole prey.
Avoid
Do not feed endless rodents/dog food; obesity and fatty liver are common and fatal.
Frequency
Regularly for growing animals; adults measured to avoid obesity.
Supplements
Dust insects with calcium (+ D3/multivitamin per schedule).
An insect-based diet, deep substrate and extreme heat are the three things that make or break this species.
✨Grooming, Shedding & Additional Needs
No grooming; the correct setup keeps them healthy.
Obesity, from overfeeding and under-housing, is the number-one welfare problem — feed lean and give space.
🖐️Handling & Interaction
Can become tame with consistent, patient handling, but they're large, strong and clawed. Temperament varies; some stay defensive.
How to handle
Build trust with daily calm interaction and tong-feeding, then support the substantial body during handling. Respect the claws, tail and bite. Not a child's pet.
✅ Do
Build trust with daily calm interaction.
Support the heavy body.
Feed lean and provide deep substrate.
Give a very hot basking zone.
Supervise children (not their pet).
⛔ Don't
Don't overfeed rodents/fatty food.
Don't under-house — they need serious space.
Don't skimp on heat, UVB or substrate depth.
Don't buy the cheap baby on impulse.
Don't underestimate the strength, claws and bite.
🦎Fun Facts
Cheap to buy but among the most commonly kept badly reptiles.
Powerful diggers that build deep burrows.
Native to the savannahs of Africa.
Overfeeding causes obesity and fatty liver — a leading cause of early death.
Kept properly they're impressive, robust and can become quite tame.
⭐Overall Verdict
An impressive monitor that's tragically easy to keep badly. Only for experienced keepers with the space, extreme heat, deep substrate and dietary discipline it demands. If you can't provide all four, choose an ackie instead.