Caiman Lizard (Dracaena guianensis) Care Sheet
The Caiman Lizard (Dracaena guianensis), more specifically the Northern Caiman Lizard, is a large, powerful semi-aquatic teiid native to tropical South America. It is immediately recognisable by its green body, orange-red head, heavily armoured scales and laterally compressed tail.
Its crocodilian appearance gives the species its common name, but Caiman Lizards are not crocodilians. They are specialised lizards closely related to tegus.
They are exceptionally well adapted to life around water. Caiman Lizards are powerful swimmers, capable climbers and strong terrestrial animals. Their natural habitat includes swamps, streams, flooded woodland and other wet environments, where they commonly bask on branches and roots positioned above water.
Their specialised jaws contain broad crushing teeth used to break the shells of snails, freshwater clams and other hard-shelled prey. This unusual feeding ecology is one of the most important considerations when keeping the species.
Caiman Lizards are not suitable for small conventional vivaria. An adult requires what is effectively a:
large indoor reptile habitat incorporating both substantial land and a properly filtered aquatic area.
Successful husbandry requires:
- A very large enclosure
- A substantial swimming pool
- Powerful water filtration
- Excellent water quality
- Strong climbing structures
- Large basking platforms
- High-output UVB
- Bright visible-spectrum lighting
- High humidity combined with ventilation
- A varied diet centred on molluscs and other suitable aquatic invertebrates
- Careful calcium and nutritional management
- Secure construction
- Considerable long-term financial and maintenance commitment
This is an:
advanced specialist species.
Quick facts
Scientific name: Dracaena guianensis
Common names: Northern Caiman Lizard, Caiman Lizard, Guyana Caiman Lizard
Family: Teiidae
Native range: Northern South America
Lifestyle: Semi-aquatic, terrestrial and climbing
Activity: Diurnal
Adult length: Commonly approximately 3–4 ft
Maximum recorded size: Around 4 ft or somewhat more
Adult weight: Large individuals can approach approximately 10 lb
Diet: Primarily molluscs and other aquatic invertebrates
Minimum adult enclosure: Approximately 8 × 4 × 6 ft should be regarded as a starting point; substantially larger custom accommodation is strongly preferable
Water area: Large enough for complete submersion, swimming and turning comfortably
Basking surface: Approximately 38–43°C (100–110°F)
Warm ambient: Approximately 27–30°C (81–86°F)
Cool area: Approximately 23–26°C (73–79°F)
Night temperature: Approximately 22–25°C (72–77°F)
Humidity: Generally around 70–80%, with higher local humidity around the aquatic area
UVB: Essential
Suggested basking UVI: Approximately 3–4
Housing: Individual housing is generally recommended
Handling: Limited; large adults are extremely powerful
Reproduction: Egg-laying
Experience level: Advanced
IUCN: Least Concern
CITES: Appendix II — Dracaena spp. are listed
Taxonomy
The accepted scientific name is:
Dracaena guianensis
It belongs to:
Family: Teiidae
Genus: Dracaena
There are two recognised species within the genus:
- Dracaena guianensis — Northern Caiman Lizard
- Dracaena paraguayensis — Paraguayan Caiman Lizard
They should not be assumed to have completely interchangeable husbandry or provenance.
This care sheet specifically concerns:
Dracaena guianensis**.**
Natural distribution
The Northern Caiman Lizard occurs across tropical northern South America.
Its range includes areas of:
- Brazil
- Colombia
- Ecuador
- Peru
- Guyana and adjoining parts of the Guiana region
The species is strongly associated with major river systems and seasonally flooded habitats.
Natural habitat
Caiman Lizards inhabit:
- Swamps
- Marshes
- Streams
- River margins
- Flooded forests
- Wet woodland
- Seasonally inundated areas
They frequently use branches and roots:
overhanging water.
When threatened, an animal can rapidly drop from its basking position into the water and swim away.
Semi-aquatic adaptation
The species is genuinely:
semi-aquatic.
A water bowl or small soaking tub does not adequately reproduce its biology.
Swimming adaptations
Caiman Lizards possess:
- A powerful laterally flattened tail
- Strong limbs
- A clear third eyelid
- Excellent swimming ability
The third eyelid helps protect the eye while the animal is submerged.
Climbing
Despite their heavy build, Caiman Lizards are also:
capable climbers.
Natural habitats commonly contain:
- Branches
- Roots
- Fallen trees
- Vegetation above water
Captive accommodation should therefore include substantial climbing opportunities.
Adult size
Caiman Lizards are large reptiles.
Adults commonly reach approximately:
3–4 ft
in total length.
Exceptional animals can approach approximately:
4 ft or somewhat more.
Published zoological information gives a range of approximately 2–4 ft, with large animals reaching around 10 lb.
Body structure
The species has:
- A heavily built body
- Powerful limbs
- A broad head
- Strong jaws
- Large dorsal scales
- A long compressed tail
The raised scales along the back contribute to the animal’s superficial resemblance to a caiman.
Colouration
Typical adults display:
- Green body colour
- Orange to reddish head
- Darker tail
- Strong contrasting patterning
Colour intensity varies between:
- Individuals
- Age groups
- Populations
Jaw specialisation
One of the species’ most distinctive adaptations is its:
mollusc-crushing dentition.
The posterior teeth are broad and rounded rather than blade-like.
These allow the animal to crush:
- Snail shells
- Freshwater clam shells
- Other hard-bodied prey
The broken shell is manipulated and the soft tissue consumed.
Behaviour
Caiman Lizards are:
diurnal.
A healthy animal may spend the day:
- Basking
- Swimming
- Climbing
- Exploring
- Foraging
- Resting above water
Intelligence and enrichment
As large active teiids, Caiman Lizards benefit from environmental complexity.
Provide opportunities for:
- Searching for food
- Swimming
- Climbing
- Digging
- Exploring
- Manipulating food items
A large but completely empty enclosure is:
not adequate husbandry.
Temperament
Captive-raised individuals may become relatively tolerant of routine keeper presence.
However, this should never lead to complacency.
An adult Caiman Lizard possesses:
- Powerful jaws
- Strong claws
- Considerable body strength
- A powerful tail
Bite risk
A defensive bite from an adult can cause:
significant injury.
Their jaws are specifically adapted to crush hard prey.
They should therefore never be treated as harmless simply because an individual appears calm.
Handling
Routine recreational handling should be:
limited.
Instead, animals should be conditioned to tolerate:
- Keeper presence
- Target training
- Entering a transport container
- Routine enclosure maintenance
Support during handling
If physical handling is necessary:
- Support the entire body
- Control the animal calmly
- Avoid restraining by the tail
- Keep the head directed safely away from the handler
Large individuals may require:
more than one experienced person.
Enclosure philosophy
Adult Caiman Lizard accommodation should be thought of as:
a purpose-built indoor habitat rather than an ordinary vivarium.
It must accommodate:
- Swimming
- Full-body submersion
- Basking
- Climbing
- Terrestrial movement
- Digging
- Thermoregulation
- UV exposure
- Retreat
Minimum adult enclosure
Approximately:
8 × 4 × 6 ft
should be regarded as a starting point for an adult.
Where practical:
larger is strongly preferable.
An enclosure of this size is already recommended as an absolute minimum in specialist husbandry guidance, but the species’ 3–4 ft adult length and aquatic lifestyle make substantially larger accommodation highly desirable.
Preferred accommodation
For a large adult, a custom room-sized enclosure can provide considerably better welfare.
An enclosure approximately:
10 × 6 × 6 ft
or larger allows much better separation of:
- Land
- Water
- Basking
- Shade
- Climbing structures
Floor strength
The combined weight of:
- Water
- Pool
- Substrate
- Rocks
- Timber
- Filtration equipment
can be enormous.
Floor loading must be considered before installation.
Waterproofing
The enclosure must be:
fully waterproof.
Water leakage in a large semi-aquatic enclosure can cause:
- Structural damage
- Electrical hazards
- Mould
- Damage to surrounding rooms
Water area
The aquatic section is a fundamental component of the enclosure.
It must be large enough for the lizard to:
- Enter easily
- Fully submerge
- Turn comfortably
- Swim
- Leave the water without difficulty
Pool size
For an adult, the pool should occupy a substantial proportion of the available floor area.
There should be enough open water for:
actual swimming rather than simply soaking.
Water depth
Water should be deep enough for complete submersion and normal swimming.
Approximately:
12–18 in or deeper
may be appropriate depending on the animal and overall pool design.
Easy exit
Provide multiple secure ways to leave the water.
Suitable options include:
- Sloping banks
- Large branches
- Textured ramps
- Stable rocks
The animal should never have to struggle against a vertical slippery pool wall.
Water filtration
Large Caiman Lizards produce:
substantial aquatic waste.
Powerful filtration is essential.
Filtration capacity
Filtration should be designed for a waste load substantially greater than would be expected from similarly sized ornamental fish.
Suitable systems may incorporate:
- Large external filters
- Sump filtration
- Mechanical filtration
- Biological filtration
- Easily serviced pre-filters
Water changes
Filtration does not eliminate the need for:
regular water changes.
The exact frequency depends on:
- Pool volume
- Filtration
- Feeding
- Waste load
- Water testing
Water quality
Monitor water quality rather than relying solely on appearance.
Dirty water can contribute to:
- Skin problems
- Eye irritation
- Bacterial disease
- Poor overall hygiene
Water temperature
The pool should generally remain around:
24–27°C (75–81°F).
The water should not become excessively warm simply because the enclosure air is tropical.
Pool heating
Where water heating is necessary, equipment must be:
- Reptile-proof
- Electrically safe
- Protected from direct contact
- Appropriately controlled
Drainage
Ideally, a large adult enclosure should incorporate:
purpose-designed drainage.
This dramatically simplifies:
- Water changes
- Pool cleaning
- Flood prevention
- Long-term maintenance
Land area
The terrestrial section should allow the animal to:
- Walk
- Rest
- Dig
- Bask
- Dry completely
- Access multiple hides
The lizard should never be forced to remain wet.
Substrate
Suitable land substrates can include deep mixtures based on:
- Organic topsoil
- Coconut fibre
- Cypress-type mulch
- Leaf litter
- Other moisture-retentive natural materials
Avoid permanently saturated substrate.
Substrate depth
Provide at least approximately:
6–12 in
where practical.
Deeper areas can provide opportunities for:
- Digging
- Nesting
- Behavioural enrichment
Furnishings
Provide:
- Large branches
- Logs
- Cork structures
- Stable rocks
- Platforms
- Visual barriers
- Vegetation where practical
Branch strength
Every climbing structure must safely support:
the full weight of an adult animal.
Decorative lightweight branches intended for small reptiles are unsuitable.
Branches above water
Large branches positioned over part of the pool reproduce an important feature of the species’ natural habitat.
They provide:
- Basking
- Resting
- Climbing
- Rapid access to water
Secure heavy furnishings
Heavy rocks and logs must be:
structurally secured.
A large lizard can move objects that appear extremely heavy to a person.
Hides
Provide secure retreats on land.
Large cork structures, custom caves or other robust hides can be used.
Temperature
Caiman Lizards require:
strong but localised basking heat.
Basking surface
Provide a broad basking surface around:
38–43°C (100–110°F).
The entire animal should be able to fit within the heated area.
Broad basking zone
One small spotlight is inadequate for a large adult.
Use multiple lamps where necessary to create:
an evenly heated basking zone approximately the size of the animal’s body.
Warm ambient temperature
Maintain the warm portion of the enclosure around:
27–30°C (81–86°F).
Cool area
Provide cooler areas around:
23–26°C (73–79°F).
Thermal gradient
A large enclosure should contain:
- Hot basking surfaces
- Warm air
- Intermediate areas
- Cooler shaded retreats
- Cooler water
This gives the animal meaningful:
behavioural choice.
Night temperature
Night temperatures can fall toward approximately:
22–25°C (72–77°F).
Night lighting
Do not use permanent:
- Red bulbs
- Blue bulbs
- Purple bulbs
Provide:
darkness at night.
If supplementary night heating is necessary, use a non-light-emitting source.
Heating safety
All heating equipment must be positioned so the lizard cannot:
- Touch bulbs
- Break lamps
- Pull fittings down
- Contact hot guards
Large teiids are extremely strong.
UVB
Caiman Lizards are:
large diurnal basking reptiles.
Appropriate UVB is essential.
Suggested basking UVI
Aim for approximately:
UVI 3–4
across the principal basking zone.
UV gradient
The enclosure must also provide:
- Intermediate UV exposure
- Low-UV areas
- Complete shade
What this means in practice
A large enclosure generally requires:
high-output linear T5 UVB lighting
positioned over the principal basking area.
The exact lamp strength depends on:
- Mounting height
- Reflector
- Mesh
- Distance to the animal
Large enclosure challenge
A common mistake is installing a powerful UVB tube at the ceiling of a tall enclosure and assuming adequate UV reaches the animal.
UV intensity decreases significantly with:
distance.
The basking platform must therefore be designed in relation to the lighting.
Mesh effect
Mesh can substantially reduce UV reaching the animal.
This must be taken into account when designing:
- Lamp position
- Basking height
UV meter
For a species requiring an expensive, purpose-built enclosure:
a UV meter should be considered essential husbandry equipment.
Measure the actual UVI where the animal basks.
UV lamp replacement
Replace UVB lamps according to:
- Manufacturer guidance
- Measured output
rather than waiting until the visible light fails.
Visible-spectrum lighting
The enclosure should be:
very brightly illuminated during the day.
Bright visible-spectrum lighting supports:
- Natural activity
- Circadian rhythm
- Exploration
- Plant growth where live planting is used
Photoperiod
Provide approximately:
11–13 hours of daylight
depending on season.
Humidity
Caiman Lizards originate from wet tropical environments.
General humidity around:
70–80%
is appropriate, with higher local humidity naturally occurring near the pool.
Ventilation
High humidity does not mean:
stagnant air.
Provide substantial ventilation.
Dry basking areas
Despite high ambient humidity, the animal must be able to:
dry completely while basking.
Constantly wet skin is not desirable.
Misting
Misting can help maintain:
- Humidity
- Plant health
- Natural environmental cycles
but the large pool itself will contribute significantly to enclosure humidity.
Diet
The natural diet is strongly specialised toward:
hard-shelled aquatic invertebrates.
Wild Caiman Lizards feed particularly on:
- Snails
- Freshwater clams
- Crayfish
- Other aquatic invertebrates
and their crushing dentition is specifically adapted to this feeding strategy.
Snails
Snails should form an important component of captive diets.
Suitable legally sourced food may include:
- Freshwater snails
- Appropriate terrestrial snails
- Frozen/thawed snails
- Commercial food-grade snails
depending on availability and biosecurity.
Never collect indiscriminately
Do not simply collect wild snails from:
- Gardens
- Agricultural land
- Roadsides
They may contain:
- Pesticides
- Parasites
- Environmental contaminants
and collection of some species may be legally restricted.
Shell-on feeding
Where safe and appropriate, offering suitable molluscs with shell provides:
- Natural feeding behaviour
- Jaw use
- Calcium
- Enrichment
Other suitable foods
Dietary variety may include appropriately sourced:
- Crayfish
- Freshwater prawns
- Mussels
- Clams
- Cockles
- Other molluscs
- Appropriate insects
Whole prey or nutritionally complete foods can occasionally contribute additional variety.
Fish
Fish may be offered as part of a varied diet, but the animal should not be maintained primarily on:
fish fillets.
Whole foods are nutritionally preferable to muscle meat alone.
Rodents
Rodents are not an appropriate staple food for a specialised mollusc-eating lizard.
If used at all, they should be:
occasional rather than routine.
Dog and cat food
Dog or cat food should not form the basis of the diet.
The fact that an animal willingly eats something does not make it:
nutritionally appropriate as a staple.
Feeding frequency
Juveniles require more frequent feeding than adults.
Young growing animals may be offered appropriately sized meals:
most days.
Adults commonly do well with substantial meals approximately:
3–4 times per week
depending on:
- Body condition
- Meal size
- Activity
- Reproductive status
Obesity
Large teiids can become obese in captivity.
Monitor:
- Body shape
- Tail base
- Activity
- Weight
Do not equate:
very heavy
with healthy.
Calcium
A diet containing appropriate whole molluscs provides substantial calcium.
However, the complete diet should still be evaluated for:
- Calcium
- Phosphorus
- Vitamin content
- Overall nutritional balance
Supplementation
Supplementation should be tailored to the actual diet.
Where appropriate UVB and a calcium-rich whole-prey diet are provided, indiscriminate heavy supplementation is unnecessary.
Fresh water and feeding
Because food may be taken into the water, feeding can rapidly contaminate the pool.
Remove:
- Uneaten food
- Shell fragments
- Decomposing material
promptly.
Feeding enrichment
Useful enrichment includes:
- Whole snails
- Hidden food
- Food placed at different heights
- Food presented near water
- Strong puzzle-feeding objects designed safely for large reptiles
Social housing
Individual housing is generally:
recommended.
Why individual housing?
Adult Caiman Lizards are large animals requiring enormous resources.
Housing more than one dramatically increases requirements for:
- Floor area
- Water volume
- Basking space
- Feeding areas
- Visual separation
Breeding groups
Pairs should only be maintained together by experienced keepers with:
exceptionally large accommodation.
Animals must be separable immediately.
Breeding
Caiman Lizards are:
oviparous — egg-laying.
Breeding condition
Animals should only be bred when they are:
- Fully mature
- Correctly sexed
- In excellent body condition
- Properly established
Sexing
Sexual dimorphism can become more apparent with maturity.
Adult males tend to develop:
- Larger heads
- More robust proportions
Reliable sex determination may require:
experienced assessment.
Courtship
Introductions should be carefully supervised.
Watch for:
- Persistent pursuit
- Biting
- Defensive behaviour
- Stress
- Refusal to feed
Nesting
A gravid female requires access to:
deep, warm, humid, diggable substrate.
Nest depth
Provide at least approximately:
12–18 in
of suitable nesting substrate, with deeper areas preferable for a large female.
Nesting substrate
Suitable mixtures can include:
- Organic topsoil
- Sand
- Moist soil-based substrate
It should be moist enough to:
hold a tunnel without collapsing
but not waterlogged.
Clutch
Published zoological information reports clutches of around:
10 eggs
although reproductive output can vary.
Incubation
Incubation can last several months.
Published zoo information gives approximately:
3–6 months.
Actual development varies according to:
- Temperature
- Moisture
- Individual clutch
Hatchlings
Hatchlings require:
- High-quality UVB
- Appropriate basking heat
- High humidity
- Clean water
- Secure climbing structures
- Appropriate mollusc-based nutrition
Juvenile water safety
Juveniles should have water deep enough to permit natural swimming while still providing:
easy exits at multiple points.
Quarantine
All newly acquired Caiman Lizards should undergo:
strict quarantine.
At least:
90 days
is appropriate, with longer quarantine justified where origin or health status is uncertain.
Quarantine challenges
Quarantine must still provide:
- Swimming
- UVB
- Basking
- Correct humidity
- Secure housing
A large semi-aquatic reptile cannot be responsibly quarantined in an:
inadequate small box.
Veterinary examination
New animals should ideally receive:
- Full physical examination
- Accurate body weight
- Faecal parasite screening
- Assessment of skin and mouth
- Review of feeding history
Wild-origin animals
Animals of wild or uncertain origin may carry:
- Internal parasites
- External parasites
- Nutritional deficiencies
- Injuries
- Chronic dehydration
- Infectious disease
Captive-bred animals should be preferred where available.
Common health concerns
Potential problems include:
- Metabolic bone disease
- Obesity
- Nutritional imbalance
- Poor water quality
- Skin infections
- Respiratory disease
- Parasites
- Burns
- Trauma
- Dental or oral disease
- Reproductive problems
Metabolic bone disease
Possible signs include:
- Weakness
- Tremors
- Poor movement
- Swollen or distorted limbs
- Soft jaw
- Fractures
MBD prevention
Provide:
- Correct UVB
- Appropriate UVI
- Calcium-rich nutrition
- Suitable basking temperatures
Skin health
Constant exposure to contaminated water can contribute to:
- Dermatitis
- Scale damage
- Secondary bacterial infection
Water quality is therefore:
a health issue, not simply an aesthetic issue.
Respiratory disease
Risk factors include:
- Inappropriate temperatures
- Stagnant air
- Chronic stress
- Poor environmental hygiene
Oral health
The specialised jaws and teeth should be monitored.
Seek veterinary assessment for:
- Swelling
- Bleeding
- Abnormal discharge
- Difficulty crushing food
- Refusal of normally accepted prey
Obesity
Obesity can result from:
- Excessive feeding
- Too many calorie-dense foods
- Insufficient exercise
- Inadequate enclosure size
Burns
Powerful basking systems create substantial burn risk.
Prevent direct access to:
- Bulbs
- Heating elements
- Hot lamp guards
- Electrical fittings
Water-related injury
Pool design should prevent:
- Entrapment
- Difficult exits
- Sharp edges
- Access to pumps
- Contact with heaters
Veterinary warning signs
Seek veterinary assessment for:
- Persistent anorexia
- Significant weight loss
- Severe lethargy
- Weakness
- Tremors
- Swollen limbs
- Abnormal breathing
- Skin lesions
- Mouth swelling
- Persistent diarrhoea
- Serious trauma
- Suspected reproductive problems
Cleaning
Caiman Lizard husbandry involves considerably more cleaning than most terrestrial reptile setups.
Routine maintenance includes:
- Removing faeces
- Removing food remains
- Removing shell fragments
- Cleaning basking surfaces
- Servicing filtration
- Water changes
- Cleaning pool surfaces
- Checking drainage
Filtration maintenance
Mechanical filter media can become heavily contaminated.
Service filters:
before flow is substantially reduced.
Electrical safety
Water and high-powered reptile lighting create significant electrical hazards.
All electrical installation should incorporate appropriate:
- Waterproofing
- Cable protection
- Drip loops
- Residual-current protection
- Secure fittings
Where necessary, use a:
qualified electrician.
Conservation
The Northern Caiman Lizard is currently assessed as:
Least Concern
by the IUCN.
Historically, Caiman Lizards were heavily exploited for their skins, which were used in the leather trade. International protection contributed to a substantial reduction in that trade.
CITES
The genus:
Dracaena
is listed under:
CITES Appendix II.
What Appendix II means
Appendix II does not mean that private keeping is automatically prohibited.
It means:
international trade is regulated.
Appropriate documentation may be required when animals cross international borders.
Documentation
Keep permanent records including:
- Scientific name
- Sex
- Breeder or supplier
- Acquisition date
- Hatch date where known
- CITES documentation
- Import/export paperwork
- Breeding records
- Identification information
Ireland, Northern Ireland and Great Britain
Keepers should check current requirements before:
- Import
- Export
- Commercial transport
- Cross-border movement
- Sale
CITES and animal-movement procedures can differ between:
- Republic of Ireland
- Northern Ireland
- Great Britain
- Other jurisdictions
Do not assume that paperwork acceptable for movement within one jurisdiction is automatically sufficient for:
international movement.
Never release captive animals
Never release a captive Caiman Lizard into:
the wild.
Common husbandry mistakes
Common mistakes include:
- Buying a juvenile without planning for adult size
- Treating the species like an ordinary terrestrial tegu
- Providing a small water tub instead of a swimming area
- Providing insufficient water depth
- Poor filtration
- Allowing water quality to deteriorate
- Providing no easy pool exit
- Keeping the land area permanently wet
- Providing inadequate climbing structures
- Using branches unable to support an adult
- Providing a tiny basking spot
- Maintaining inadequate basking temperatures
- Providing insufficient UVB
- Mounting UVB too far from the animal
- Failing to measure UVI
- Providing poor visible lighting
- Feeding primarily rodents
- Feeding primarily muscle meat
- Providing insufficient molluscs
- Overfeeding
- Ignoring shell and food waste in the pool
- Underestimating adult strength
- Assuming a tame animal cannot bite
- Failing to secure electrical equipment
- Failing to plan drainage before building the enclosure
- Attempting group housing in inadequate space
- Failing to provide deep nesting substrate
- Purchasing an animal of uncertain origin without quarantine
- Underestimating the long-term financial cost of heating, lighting, filtration and water management
Responsible ownership
Before obtaining a Caiman Lizard, ensure you can provide:
- Purpose-built adult accommodation
- At least approximately 8 × 4 × 6 ft, with larger strongly preferred
- A substantial swimming pool
- Water deep enough for complete submersion and swimming
- Multiple easy pool exits
- Powerful filtration
- Regular water changes
- Safe water heating where required
- Waterproof construction
- Effective drainage
- Strong climbing structures
- Secure basking platforms
- A broad basking zone around 38–43°C (100–110°F)
- Warm ambient temperatures around 27–30°C (81–86°F)
- Cooler areas around 23–26°C (73–79°F)
- Night temperatures around 22–25°C (72–77°F)
- Humidity around 70–80%
- Strong ventilation
- High-quality UVB
- Approximately UVI 3–4 at the main basking zone
- Bright visible-spectrum lighting
- A reliable source of suitable molluscs
- A varied, nutritionally appropriate diet
- Secure electrical installation
- Quarantine facilities suitable for a semi-aquatic reptile
- Appropriate CITES documentation
- Access to a reptile-experienced veterinarian
- The financial resources to maintain a large heated and filtered aquatic enclosure for many years
Summary
The Northern Caiman Lizard (Dracaena guianensis) is a spectacular large semi-aquatic teiid from tropical South America.
Adults commonly reach approximately:
3–4 ft
and large individuals can weigh around:
10 lb.
They naturally inhabit:
- Swamps
- Streams
- Flooded forests
- Wet woodland
and are equally capable of:
swimming, climbing and terrestrial movement.
An adult requires purpose-built accommodation of at least approximately:
8 × 4 × 6 ft,
with substantially larger accommodation strongly preferred.
A large filtered pool is:
essential, not optional.
Provide a broad basking area around:
38–43°C (100–110°F),
warm ambient temperatures around:
27–30°C (81–86°F)
and cooler areas around:
23–26°C (73–79°F).
Maintain humidity generally around:
70–80%
while providing strong ventilation and dry basking areas.
Use high-quality UVB to provide approximately:
UVI 3–4
at the principal basking zone, with lower-UV and shaded areas elsewhere.
The diet should reflect the species’ specialised natural feeding ecology and centre on appropriate:
- Snails
- Clams
- Mussels
- Crayfish
- Other suitable aquatic invertebrates
rather than relying on rodents or muscle meat. Their broad posterior teeth are specifically adapted to crushing hard-shelled prey.
Water quality, filtration and drainage are central components of successful husbandry.
The species is currently assessed as:
IUCN Least Concern
and Dracaena spp. are regulated under:
CITES Appendix II.
Caiman Lizards can be exceptionally rewarding animals for appropriately equipped keepers, but their enormous space requirement, aquatic husbandry, specialised diet, strength and long-term costs make them:
an advanced specialist species rather than a conventional pet lizard.
IMPORTANT INFORMATION:
This care sheet provides general husbandry guidance and does not replace species-specific research or veterinary advice. Individual requirements may vary.
If you have concerns about an animal’s health or care, consult a suitably experienced exotic or reptile veterinarian.
Information correct at the date of publication.
reptilecommunity.com | Revised: September 2026