← Full Blue Tongue Skink guide
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Blue Tongue Skink — care sheet
Tiliqua spp. · Beginner
| Adult size | 18–24 in (thick-bodied) |
|---|---|
| Lifespan | 15–20+ years (some live 20–30) |
| Enclosure | Big — they’re thick-bodied, active ground-dwellers. Provide at least 12 sq ft of floor space (a 4×3 ft footprint or larger) and 18–24 in of height (24 in if lights are mounted inside). The old “4×2×2 ft” standard is now considered too small; bigger is better. |
| Basking / warm zone | A proper hot basking surface of 100–105°F (37–40°C) from overhead heat on a thermostat — they are diurnal baskers like a bearded dragon. |
| Cool side | Cool end / ambient ~75–85°F (24–29°C) for Indonesian types; Australian types run a touch cooler. |
| Night | Night ~65–75°F (18–24°C) — a natural drop is fine. |
| UVB & lighting | Strong UVB is needed (a diurnal basker): a linear T5 HO bulb giving a UVI of 3.0–4.0 at the basking area, spanning much of the enclosure (Arcadia Forest 6% for Indonesian types, Desert 12% for Australian). Replace every 12 months. |
| Humidity | SUBSPECIES-DEPENDENT, and the spec people get most wrong. Indonesian types (Merauke, “Classic”, Halmahera, Kei, Tanimbar) want 60–80%; Northern 40–60%; Australian (Centralian, Western, Blotched) 20–50%. Identify your subspecies and match it. |
| Substrate | A deep, burrowable substrate (they dig): a soil/coco mix that holds humidity for Indonesian types, drier for Australian types. |
| Diet | OMNIVORE — the defining feature, and the key to success. Feed as much variety as possible: protein (insects, snails, eggs, lean cooked meats), vegetables/greens, and a little fruit. A rough serving is ~1–2 tablespoons (about head-sized); juveniles eat more protein and more often, adults shift toward vegetables. Variety is everything. |
| Supplements | Dust protein and salad with calcium, plus a multivitamin on a rotation. |
Before you buy
- Space for a large (≥12 sq ft floor) enclosure — this is a big, active lizard.
- Strong UVB (T5 HO) + a hot basking lamp on controllers.
- Willingness to prep a varied omnivore diet (protein + veg + fruit), not just one food.
- Knowing your subspecies so you can set the right humidity.
- A 15–20+ year commitment.
See a reptile vet if…
- Weak, shaky, or bent limbs, tremors, or a soft/rubbery jaw (signs pointing to metabolic bone disease).
- Laboured or open-mouth breathing, mucus, or clicking (possible respiratory infection).
- A swollen, firm belly with no droppings, or straining (possible impaction).
- Obvious obesity — fat rolls, a dragging belly (very common; ease back on fatty protein).
- A kinked or deformed spine (often a husbandry/nutrition problem — get it checked).
- Any tissue protruding from the vent (prolapse) — keep it moist and go now.
Never
- Never feed an insect-only or rodent-only diet — they’re omnivores and need plants too.
- Never guess the humidity — match it to your subspecies.
- Never skip strong UVB and a proper hot basking zone.
- Never house two skinks together — they’re solitary and will fight.
- Never let it overheat above the basking range.
Common blue tongue skink questions
How hard are Blue Tongue Skinks to keep — are they good for beginners?
Beginner. Hardy, dog-tame, and beginner-friendly once you understand two things: they’re OMNIVORES (a varied diet, not just insects), and humidity depends on which subspecies you have.
What do Blue Tongue Skinks eat?
OMNIVORE — the defining feature, and the key to success. Feed as much variety as possible: protein (insects, snails, eggs, lean cooked meats), vegetables/greens, and a little fruit. A rough serving is ~1–2 tablespoons (about head-sized); juveniles eat more protein and more often, adults shift toward vegetables. Variety is everything.
How big an enclosure do Blue Tongue Skinks need?
Big — they’re thick-bodied, active ground-dwellers. Provide at least 12 sq ft of floor space (a 4×3 ft footprint or larger) and 18–24 in of height (24 in if lights are mounted inside). The old “4×2×2 ft” standard is now considered too small; bigger is better.
What basking temperature do Blue Tongue Skinks need?
A proper hot basking surface of 100–105°F (37–40°C) from overhead heat on a thermostat — they are diurnal baskers like a bearded dragon.
What should the cool side be for Blue Tongue Skinks?
Cool end / ambient ~75–85°F (24–29°C) for Indonesian types; Australian types run a touch cooler.
What night-time temperature do Blue Tongue Skinks need?
Night ~65–75°F (18–24°C) — a natural drop is fine.
What UVB and lighting do Blue Tongue Skinks need?
Strong UVB is needed (a diurnal basker): a linear T5 HO bulb giving a UVI of 3.0–4.0 at the basking area, spanning much of the enclosure (Arcadia Forest 6% for Indonesian types, Desert 12% for Australian). Replace every 12 months.
What humidity do Blue Tongue Skinks need?
SUBSPECIES-DEPENDENT, and the spec people get most wrong. Indonesian types (Merauke, “Classic”, Halmahera, Kei, Tanimbar) want 60–80%; Northern 40–60%; Australian (Centralian, Western, Blotched) 20–50%. Identify your subspecies and match it.
What substrate do Blue Tongue Skinks need?
A deep, burrowable substrate (they dig): a soil/coco mix that holds humidity for Indonesian types, drier for Australian types.
What supplements do Blue Tongue Skinks need?
Dust protein and salad with calcium, plus a multivitamin on a rotation.
How big do Blue Tongue Skinks get?
18–24 in (thick-bodied)
How long do Blue Tongue Skinks live?
15–20+ years (some live 20–30)
What are the signs Blue Tongue Skinks are sick or need a vet?
See a reptile or exotics vet if you notice: Weak, shaky, or bent limbs, tremors, or a soft/rubbery jaw (signs pointing to metabolic bone disease).; Laboured or open-mouth breathing, mucus, or clicking (possible respiratory infection).; A swollen, firm belly with no droppings, or straining (possible impaction).; Obvious obesity — fat rolls, a dragging belly (very common; ease back on fatty protein).; A kinked or deformed spine (often a husbandry/nutrition problem — get it checked).; Any tissue protruding from the vent (prolapse) — keep it moist and go now..
Sources: ReptiFiles — Blue Tongue Skink Care · Association of Reptilian & Amphibian Veterinarians (ARAV) · Merck Veterinary Manual — reptiles. Written and fact-checked by The Baskden Team — kind, general guidance, not a diagnosisand not a substitute for an exotics vet. baskden.com