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Atlas / Library / Varanidae / Savannah Monitor
AdvancedDiurnal · active nowCITES IIIUCN LC
Varanidae

Savannah Monitor

Varanus exanthematicusเหี้ยซาวันนา / ตะกวดซาวันนาBosc Monitor

Part of this is not on the page we cite. We opened it on 10 Aug 2026 and some of the degrees above are not stated there. The values above may still be right, but we cannot show you where they came from, and nobody here has checked them against a second source. Anything about a sick animal goes to a qualified exotic vet, not to a page. zillarules.com

Photograph: 胡正恆(Jackson Hu) · CC BY

14:00
Day

Drag the sun. Savannah Monitor is diurnal, so what it is doing changes with the light.

Burrowing · warm · middlingFrom the sheet: 25–30°C, humidity 60%

The way of life is written in this sheet, word for word. The climate words summarise the two figures above them, they do not add to them.

CITES II is a global listing and holds in every country. National law is not global, and we hold no national wildlife law for any country, Thailand included. Check your own authority before buying or selling.

Back to the globe My keep

https://keepr.pet/husbandry/en/varanus-exanthematicus

‹ All husbandry guides
Temperature25–30 °C
Humidity60 %
Enclosure240×120×90
Diet2–4 days
Savannah Monitor (Varanus exanthematicus), photographed in the wild
Photograph · AJ Beavan · CC0

Photographed by an observer on iNaturalist and published under a Creative Commons licence; the photographer and the licence are named under the image. It is not an animal of ours, and no animal was handled by us to produce it.

The numbers

Temperature

152025303540 °C
25–30°Cool side
Warm side: not in our data

The cool side, 25–30°C. This sheet states the cool side only. It gives no warm side or basking figure, so the hot end is not in our data. Same scale on every sheet here, so two species compare by eye.

The sheet statescool 25-30 °C

Humidity

60%Target RH

The sheet states~60% ambient + humid burrow (~100%)

UVB

Requiredrequired

The sheet statesStrong T5 HO

Identity

Adult size

1.75 m90–120 cm
1520100400 cm
90–120 cmNose to tail, adult

The size the sheet states for a grown animal.

Why

Two drawings, because they answer two questions. The silhouette is at true scale against a 1.75 m person: it says how big this animal actually is, which no number does for someone who has never seen one. The bar under it is logarithmic and shared by every sheet here, so a 2 cm isopod and a 4 m python both stay readable on the same axis and two species can be compared at a glance.

Family / Order
Varanidae / Squamata
Adult size
90–120 cm (3.5–4 ft)
Lifespan (captivity)
10–15 yrs (up to 20+; often shortened by obesity)
Activity
Diurnal; terrestrial burrower
Temperament
Intelligent; can tame, but needs huge space

How common this animal is

368,004Live individuals in declared US trade filings

NOT a measure of how many are kept. These filings count animals shipped for any purpose, including the food trade and laboratory supply, and they are United States records only. The three largest volumes in the source belong to a food frog, a bait species and the standard laboratory amphibian.

US Fish and Wildlife Service LEMIS declared wildlife import and export records, as compiled in the received dataset

Enclosure and conditions

Enclosure

substratewater60 % RHUVB tube240 cm90 cm
watersubstrateUVB tube
50100150200 cm
240 × 120 × 90 cmWidth × depth × height
288dm² of floor
Warm side: not in our dataHides: not in our data

Drawn from the stated numbers. Only what the sheet states is drawn inside.

Why

The rectangle carries the exact width-to-height ratio of the figures above it, and the ruler under it places that width on the 0–250 cm scale every sheet here shares, so two species still compare at a glance. Nothing is added that the sheet does not name: a lamp drawn on a sheet that never mentions one would be invented equipment. What the sheet leaves out is listed rather than left blank, because an empty tank reads as « none needed ».

The sheet states240 × 120 × 90 cm (8×4×3 ft - a room)

Basking
50–65 °C (120–150 °F) surface
Cool side
25–30 °C
Humidity
~60% ambient + humid burrow (~100%)
UVB (required)
Strong T5 HO
Min. size
240 × 120 × 90 cm (8×4×3 ft — a room)
Substrate
60+ cm deep soil (burrowing)
Water
Large tub to soak

What your climate adds

This sheet states a range to hold. Your local climate decides how much work holding it is. Pick the nearest city: nothing is sent anywhere, the choice stays in this browser.

Diet

Feeding rhythm

Juvenile
every 1 d
Adult
every 2.3–3.5 d
12Meals in 28 days · adult

Twenty-eight days, one row. Each band is a meal window. This sheet states a figure for each age, so each age has its row.

Why

The windows widen as they go because the interval is a range: four meals after a 10–14 day cycle land anywhere between day 40 and day 56. A young animal's row is drawn only where the sheet gives one: working it out by dividing the adult interval would be inventing a ration.

The sheet statesCrickets, roaches, worms · 2–3×/week

Diet type
Primarily insectivore — even as adults
Staple insects
Crickets, roaches, worms
Avoid
Fatty rodents / dog food (obesity!)
Juveniles
Daily
Adults
2–3×/week
Calcium
Dust + multivitamin

Behaviour and handling

HandlingTolerant if worked with; food-motivated
DiggingDeep burrows essential
CohabitationSolo
DefenseTail whip, hiss, powerful bite
ChildrenAdult only

Reproduction

Life course

Day 0Hatch
2 yrSexual maturity
10–15 yrLifespan in care
150–180 dIncubation
10–50Clutch
10 yrMinimum commitment
~8 yrReproductive window

Read from the lifespan and maturity the sheet states, for animals in care and not in the wild.

Why

The minimum commitment is the low end of that lifespan, and the reproductive window is what is left after maturity: both are subtractions on stated figures, not figures of their own. The sheet also reports a record of about 20 years; that is a reported maximum, not the range to plan for.

Sexual maturity
~2 yrs
Clutch
10–50 eggs
Incubation
~150–180 days

Common health problems

Obesity
Signsthe #1 killer — overfeeding rodents, low activity
Preventinsect staple + large active space
Metabolic bone disease
Signsweak bones
Preventstrong UVB + calcium + hot basking
Impaction
Signsloose substrate / cool temps
Preventdeep proper substrate + heat
Parasites
Signscommon in wild-caught
Preventchoose captive-bred; fecal test

When to see a vet

This is not veterinary advice. If red flags appear (open-mouth breathing, months of weight loss, 'stargazing', persistent regurgitation) consult a qualified exotic (herp) veterinarian. Quarantine new arrivals 30–90 days.

Good to know

  • Sold tiny but grows huge fast: one of the most rehomed reptiles.
  • A burrowing digestive furnace: needs extreme basking heat.
  • In the wild it eats mostly invertebrates, not rodents.
  • Sold tiny but grows huge fast — one of the most rehomed reptiles.
  • A burrowing digestive furnace — needs extreme basking heat.

Common questions

Does it stay small?

No. 1 m+, needs a room-sized enclosure.

Feed rodents?

Minimize: insects are the staple; obesity kills.

Beginner pet?

No: a big space & heat commitment.

What it needs

Enclosure at least 240 × 120 × 90 cmbecause enclosure240 × 120 × 90 cm (8×4×3 ft — a room)
A thermometerbecause tempcool 25-30 °C
A hygrometerbecause humidity~60% ambient + humid burrow (~100%)
UVB (T5), stated as requiredbecause uvbStrong T5 HO
Not stated: The heat sourcethis sheet names only the cool side: « cool 25-30 °C »

Every line above is deduced from a value this sheet states, and names which one. Nothing here is a general recommendation. What the sheet does not state is listed too, rather than left out: a kit that looks complete is worse than one that names its gap.

  • Room-sized enclosure + deep substrate
  • High-wattage basking + thermostat
  • Strong T5 UVB
  • Large water tub
  • Calcium + multivitamin
  • Feeder insects + IR thermometer

Sources

Others in this group

What this sheet states

100%
TemperatureHumidityEnclosure sizeActivityOriginDietSourcesUVB

Every field this product runs on is stated here. That is not a claim that the values are right: it says what the sheet states, not whether it is true. Whether a human has read it is the badge at the top of this page.

UVB is measured but does not count: it is absent from 421 of 678 sheets, and on most of them that is not a gap, since a nocturnal snake's sheet has no reason to state a UV index. Counting it would call the library incomplete without cause.