Savannah Monitor — care sheet

Advanced. Sold cheaply as an "easy beginner monitor" — and it is one of the most mismanaged reptiles in the hobby. Most are wild-caught, they grow to 3–4 ft, and they are chronically kept too small, too cool, and far too fat. A genuinely advanced carnivore that needs serious space, extreme heat, a deep moist burrow, and an insect-based diet — rewarding for a committed keeper, wrong for a first reptile.

An insect-based CARNIVORE — not a rodent pet. Field studies of wild savannahs show a diet dominated by insects and other invertebrates, so base captive feeding on a large, varied supply of gut-loaded insects (dubia and other roaches, crickets, locusts, snails), with whole prey (the occasional egg, or a fuzzy) only as an occasional extra. OBESITY is the number-one killer: never free-feed rodents, dog food, or cat food. Growing animals eat a lot; adults eat far less — feed to a lean body condition, not to appetite.

Big: an absolute minimum of 8×4×4 ft (about 32 sq ft of floor) for one adult, and bigger is genuinely better — this is a roaming, active animal. A glass tank is not enough; most keepers build a custom enclosure. House ONE per enclosure.

A large, intensely hot basking SURFACE of roughly 130–150°F (55–66°C) — the monitor hallmark — from a tight cluster of halogen floods, measured with a temp gun at the basking surface (not air temperature). It needs a broad hot zone big enough to warm its whole body.

Cool side 75–85°F (24–29°C). A real cool retreat is essential — a monitor that can’t escape the heat can suffer heat stroke.

Night no lower than about 72°F (22°C); a mild drop is fine, but add gentle background heat if the room is cold.

Strong UVB for a diurnal open-habitat basker: a T5 HO bulb (Arcadia Desert 12% or Zoo Med ReptiSun 10.0) giving UVI ~3.0–4.0 at basking height (Ferguson Zone 3), plus bright daylight LED. Replace the UVB bulb yearly.

Moderate ambient humidity (40–60%) but — as with the ackie — the real key is a deep, MOIST burrow. The bottom of the substrate is kept damp so it holds high humidity down where the monitor digs and sleeps. Dry air over a humid burrow is how a savannah stays hydrated; kept bone-dry with no burrow, it dehydrates.

DEEP and burrowable — at least 12 in for a juvenile and 18–24 in for an adult — of a soil/sand mix that packs and holds a tunnel, kept moist near the bottom. In the wild they dig long, complex burrows; a monitor that can’t burrow is a stressed, dehydrated monitor.

Dust insects with calcium; add a multivitamin on a rotation (about weekly).

3–4 ft (90–120 cm) — a heavy, powerful, thick-bodied lizard

10–15+ years with good care — but poor husbandry (obesity) commonly cuts it far shorter

See a reptile or exotics vet if you notice: Obvious obesity — a bloated body, fat pads at the base of the tail and limbs, spread scales, no waist (the No. 1 savannah problem, and a gateway to fatty-liver and organ disease).; Lethargy, swollen gritty joints, or going off food (possible gout / organ disease, often from a fatty, rodent-heavy diet).; Weak or bent limbs, tremors, or a rubbery jaw (signs pointing to metabolic bone disease).; Open-mouth breathing, wheezing, or mucus, especially in a chilled or damp animal (possible respiratory infection).; Poor weight, abnormal or worm-visible droppings in a new import (parasites), or any tissue protruding from the vent (prolapse)..