Argentine Black and White Tegu Care Sheet
AdvancedSalvator merianae · lizard
Argentine tegus are large, intelligent lizards requiring massive, humid enclosures and a varied omnivorous diet. They are best suited for experienced keepers who can provide consistent handling and large, custom habitats.
Quick care stats
Adult size3-4 feet (up to 4.5 ft)
Lifespan15-20 years
Min enclosure8x4x4 ft (custom built recommended; juveniles 75-120 gallons)
Basking temp100-110°F
Ambient temp80-85°F
Night temp70-75°F
Humidity70-80%
UVBYes - T5 HO 10.0/12% UVB (Ferguson zone 4)
DietOmnivorous: insects (crickets, roaches, superworms), pinky/fuzzy mice (once a week for adults), fruits (berries, mango), vegetables (squash, leafy greens). Juveniles daily, adults 3-4 times per week.
HandlingRegular handling from a young age can produce a docile, tolerant pet; however, adults are strong and can be defensive during brumation or if not accustomed.
What you need (full setup)
🔧 T5 HO UVB fixture (10.0 or 12% bulb, length matching enclosure)Essential for vitamin D3 synthesis and calcium metabolism to prevent MBD.🔧 High-output basking heat lamp (e.g., halogen flood, 150-250W)To achieve basking spot of 100-110°F for thermoregulation and digestion.🔧 Thermostat for heat sourcesPrevents overheating and ensures safe, controlled temperatures.🔧 Digital thermometer/hygrometer (two: warm and cool end)Accurate monitoring of temperature gradient and humidity levels.🔧 Deep moisture-retentive substrate (e.g., cypress mulch, coconut coir, topsoil mix, 6-12 inches)Allows burrowing, maintains 70-80% humidity, and supports shedding.🔧 Large water bowl (big enough for soaking) and separate food dishesProvides drinking water and soaks for hydration and shedding; dishes keep food clean.🔧 Hides (multiple: warm, cool, humid hide with sphagnum moss)Reduces stress and provides security; humid hide aids shedding.🔧 Climbing branches, rocks, and enrichment items (e.g., large logs, PVC pipes)Encourages natural behaviors, exercise, and mental stimulation.
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Common health issues
- Metabolic bone disease due to insufficient UVB or calcium
- Obesity from overfeeding high-fat prey
- Respiratory infections from low humidity or poor ventilation
- Parasites (internal/external) requiring fecal exams
⚠️ For any sign of illness (not eating, lethargy, swelling, retained shed), see a qualified exotics vet. Care sheets are general guidance only.