A large, semi-aquatic South American teiid with armored caiman-like scales and powerful jaws specialized for crushing snails. Spectacular but demanding, requiring a huge enclosure with a large heated swimming area. Listed on CITES Appendix II, so legal import and sale are regulated.
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Total length up to 1.2-1.5 m (4-5 ft); a heavy-bodied, semi-aquatic teiid. Males are larger with broader heads.
Lifespan
10–15 years
Social needs
solo
Native region
Northern South America (Amazon basin: Brazil, Guyana, Ecuador, Peru, Colombia)
Origin
New World
Climate
🌴 Tropical
Water type
💧 Freshwater
Family
Teiidae
Genus
Dracaena
Part of the Tegus and large teiids
Tegus and their large teiid relatives are big, intelligent, often semi-aquatic New World lizards with powerful jaws and big appetites. They need spacious enclosures, strong heat and UVB, and an experienced keeper.
From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.
Photo coming soon
Minimum
Large arboreal paludarium
8 × 3 × 4 ft, paludarium
Dracaena guianensis is a large (3–4 ft) semi-aquatic teiid. Minimum is an 8×3×4 paludarium with deep swim section, massive branches, basking 35 °C, 10–12% UVB, humidity 70–80%. Specialist snail-eater.
Photo coming soon
Recommended
Custom paludarium
10 × 4 × 5 ft, custom paludarium
A 10×4×5 paludarium with large pool (they dive for snails), extensive branches, live plants, and strong UVB. Diet of snails is challenging and expensive long-term.
Photo coming soon
Ideal
Bioactive Amazonian paludarium
Dedicated room (≥ 12 × 6 × 6 ft)
Dedicated bioactive Amazonian paludarium with deep pool, dense canopy, live tropical plants, and full UVB. Best welfare for a species few keepers can house properly.
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
Photo coming soon
Egg / Neonate
Most reptiles lay leathery- or hard-shelled eggs incubated by ambient warmth, though some snakes and lizards give live birth. Incubation temperature can influence sex and development in many species.
Photo coming soon
Hatchling
Hatchlings emerge as fully formed miniatures of the adult, often using an egg tooth to slit the shell. They are independent from birth but small and vulnerable, and may show brighter or different juvenile patterning.
Photo coming soon
Juvenile
Juveniles grow steadily, shedding their skin periodically as they enlarge. Coloration and proportions shift toward the adult form, and growth rate depends heavily on temperature, diet, and basking/UVB access.
Adult
Adults reach the species' full length and mass and become sexually mature. Many reptiles show sex differences in size, coloration, or features (such as larger heads, hemipenal bulges, or femoral pores), and continue to shed throughout life.
Habitat & enclosure
Caiman lizards need a very large enclosure with a substantial, filtered swimming pool, since they are strong swimmers that spend much time in water. A single adult needs a footprint on the order of 2.4 x 1.2 m (8 x 4 ft) or more, with both land basking areas and a deep water section. Keep water around 24-28 C (75-82 F), a basking spot of 38-43 C (100-110 F), ambient 27-29 C (80-85 F), and high humidity (70-90%). Strong UVB is required.
Substrate
On the land portion use a deep, humidity-retentive mix (topsoil, coir, cypress mulch) that holds moisture. The water section needs a smooth, easily cleaned bottom and strong filtration. Keep humidity high throughout and provide secure, sturdy hides and basking platforms able to support a heavy lizard.
Equipment & setup
Essentials: powerful aquatic filtration (canister/pond-grade) for the swimming area, submersible/water heater, a high-wattage basking lamp on a thermostat, strong UVB, and a misting system for humidity. Use heavy, stable basking decor and a drainage plan for the large water volume.
Diet
A specialized molluscivore with broad, flat crushing teeth. Offer snails (a staple), as well as crayfish, shrimp, mussels, and other shellfish; many also take ground turkey/insect mixes, fish, and some fruit. Dust/supplement appropriately with calcium and vitamins. Snail-based diets help maintain natural jaw use and nutrition. Feed adults every 1-3 days.
Behavior & temperament
Diurnal and semi-aquatic, alternating between basking and swimming/diving. They are powerful animals with strong jaws and can deliver a serious bite; wild-caught imports are often defensive and stressed. With patient, consistent work some captive-bred animals calm considerably, but they demand respect and are not a casual handling pet. House singly.
Health
Poor water quality is a leading cause of skin and eye infections and general decline, so robust filtration and clean water are critical. Watch for metabolic bone disease, respiratory infection, parasites (common in imports), and stress/injury in under-housed animals. Provide warm, clean water and proper basking. Quarantine and fecal-check new imports.
Tips, DIY & hacks
Treat the water like an aquarium: oversize the filtration and do regular changes, because dirty water quickly causes skin and eye problems. Source captive-bred or established animals when possible, as fresh imports are often parasitized and very defensive. Because this species is CITES Appendix II, buy only from sellers who can document legal, captive-bred or properly imported origin. Budget for the space, water volume, and snail supply before acquiring one.
