Use this guide as a starting point alongside the detailed sources below. Health concerns, unexplained changes in behavior, or feeding problems belong with a reptile veterinarian.
Adult enclosure recommendation
Our recommended minimum: 8′ × 4′ × 4′ (243.9 × 122 × 122 cm), length × depth × height.
Usable internal space for 1 adult animal. One adult Tupinambis teguixin up to about ≈ 15.748″ (40 cm) snout-to-vent length. Confirm identification; this is not an Argentine tegu brumation protocol.
Height is the usable internal envelope, including the space reserved for substrate and water. Check the remaining movement space and lamp clearance after installation.
No separate numerical preferred threshold is established. Expand continuous foraging floor and the diggable soil area around bathing and shaded retreats, retaining sufficient equipment clearance.
Our 8′ × 4′ (243.84 × 121.92 cm) floor adopts the larger preferred footprint in the species keeper account and satisfies the FBH (Federation of British Herpetologists) 6 × 3 body-length rule for a ≈ 15.748″ (40 cm) snout-to-vent length. The 4′ (121.92 cm) internal height is our adaptation to retain about 3′ (91.44 cm) above ≈ 11.811″ (30 cm) of soil, with protected equipment overhead. This is an editorial housing recommendation, not a validated threshold.
Measure snout-to-vent length, excluding the tail. At ≈ 17.717″ (45 cm) SVL (snout-to-vent length, excluding the tail) the 6 × 3 × 3 rule requires ≈ 106.3″ × 53.2″ × 53.2″ (270 × 135 × 135 cm), including the substrate layer; this leaves ≈ 41.339″ (105 cm) above ≈ 11.811″ (30 cm) soil before equipment.
Adult with ≈ 17.717″ (45 cm) snout-to-vent length
Our recommended minimum: 106.3″ × 53.2″ × 53.2″ (270 × 135 × 135 cm), length × depth × height. FBH 6 × 3 × 3 SVL, with ≈ 11.811″ (30 cm) soil leaving ≈ 41.339″ (105 cm) before fixtures.
- Floor space
- Provide a 32 sq ft (2.97 m²) floor with separate basking, shaded retreat, digging and bathing areas.
- Climbing space
- Use low, stable basking platforms and sturdy obstacles; avoid falls onto hard basin edges.
- Substrate
- Provide about ≈ 11.811″ (30 cm) of diggable soil retaining moisture below the surface, leaving about ≈ 36.22″ (92 cm) above it before fixtures.
- Water
- Provide a stable basin that permits complete soaking and an easy exit. Check daily and change immediately after soiling.
- Security and ventilation
- Use dig-resistant walls, locked doors, protected thermostatic heating and ventilation that preserves a humid retreat. Dimensions alone do not establish suitability.
Evidence gaps requiring review:
- The opened T. teguixin accounts do not establish a measured UVI (ultraviolet index) or ordinary non-breeding nighttime lower target. A complete night and UVB (ultraviolet B) commissioning plan remains required; Argentine-tegu humidity and brumation advice is not applicable evidence.
Meeting these dimensions alone does not establish suitability. Check the usable layout, environmental conditions, equipment clearance and the individual animal’s requirements before occupation.
Confirm the animal and prepare permanent housing
Confirm that the animal is Tupinambis teguixin, often sold as a Colombian or golden tegu. Plan for a strong, active lizard that digs and may remain defensive about handling. House it individually. Do not import an Argentine tegu's seasonal cooling routine into this guide.
References: [1]
Our recommended adult enclosure
We recommend at least 8′ × 4′ × 4′ (244 × 122 × 122 cm) of usable internal length × depth × height for one adult up to about ≈ 15.748″ (40 cm) snout-to-vent length. This uses the larger specialist floor recommendation and adds height for deep soil. The ≈ 48.031″ (122 cm) height is the whole internal envelope, not clear height above substrate. A ≈ 17.717″ (45 cm) body requires at least ≈ 106.3″ × 53.2″ × 53.2″ (270 × 135 × 135 cm) under the FBH body-length rule; do not use total length including the tail in that calculation. No separate preferred numerical target is established beyond this adopted larger footprint. More room should improve actual digging, foraging and thermal choice. A juvenile enclosure is temporary and must be replaced before those choices become cramped.
Provide digging, shelter and water
Use about ≈ 11.811″ (30 cm) of diggable soil with a moist lower layer and a drier surface, leaving about ≈ 36.22″ (92 cm) above it before fixtures. Secure heavy furnishings to the base so burrowing cannot undermine them. Provide an enclosed retreat and a stable basin large enough for the whole animal to soak. Check water daily and replace it whenever soiled. Keep basking and cool areas accessible without crossing an exposed, empty floor. The stated dimensions do not compensate for a basin occupying every usable movement route.
References: [1]
Measure heat, light and humidity
For adults, establish a basking surface around 125–135 °F (52–57 °C) with cool-end air around 75–85 °F (24–29 °C). Measure the surface with an infrared thermometer and air with separate fixed probes. Juveniles should begin with the gentler approximately 110 °F (43 °C) surface described in the keeper protocol, with equally accessible cool cover. Protect all heaters and control them by thermostat. Provide bright daylight and UVB over about 12 hours, with complete shade and darkness overnight. No species-specific UVI dose is established by the opened sources; choose lamp position from measured output at animal height and obtain specialist commissioning rather than treating a bulb percentage as a dose. Night heat depends on room conditions; the sources do not establish a tested lower safe limit. Monitor overnight conditions and arrange an appropriate plan before purchase.
Keep the burrow moist without saturating the cage
Measure humidity at the cool retreat as well as the basking end. Aim for roughly 60–80% in the cool area while allowing the heated basking zone to read much lower, around 20–30%, as in the keeper account. A dry reading directly under a lamp is not a reason to soak every surface. Maintain moist lower soil, fresh water and ventilation; inspect skin and retained shed at toes and tail.
References: [1]
Where recommendations differ
Published housing ranges from 6′ × 3′ × 3′ (182.88 × 91.44 × 91.44 cm) to a preferred floor around 8′ × 4′ (243.84 × 121.92 cm). We adopt the larger footprint because a deep digging zone, full-body basin and temperature gradient consume real floor space, then add internal height to retain movement above the soil. This is our judgment rather than proof that a numerical cutoff has been established. The keeper page has an incorrect Celsius conversion in one adult basking sentence; use the explicitly labeled Fahrenheit range and the separately agreeing 125.6–134.6 °F (52–57 °C) supplier range. The supplier's humidity paragraph names Argentine tegus, so it does not support a Colombian-tegu humidity claim.
Feed for condition and age
Build variety around suitable insects, other invertebrates and appropriately sized whole prey. Offer a little fruit as an addition, not a replacement for animal foods. Use calcium and a multivitamin on foods that need them, with the schedule matched to measured UVB and diet; whole prey does not need the same treatment as boneless meat or insects. A practical starting schedule is five feeding days weekly for young hatchlings, four for animals around seven to twelve months, three for subadults and about two for mature animals. Adjust portions and frequency to growth, weight and body condition rather than feeding to appetite alone.
Daily care and handling
Remove feces and spoiled food promptly, inspect burrows and water, and log temperatures and meal dates. Use predictable routines and let the tegu approach; do not force interaction with a defensive animal. Seek reptile-veterinary help for persistent loss of condition, abnormal breathing, swelling, wounds or failure to shed normally. Check barrier strength and basin access as the animal grows, and have an adult enclosure ready before temporary housing becomes restrictive.
Sources & further reading
Read the full recommendations and check details for your animal, equipment, and local conditions.
- Reptile Talk: Golden Tegu
- Dubia: Colombian Tegu Care Sheet
- Federation of British Herpetologists: Recommended Minimum Enclosure Size
Original Creature Corner guide. Editorial fact and citation checks are recorded; independent veterinary review has not been performed.



