Red Tegu (Salvator rufescens) Care Sheet
The Red Tegu (Salvator rufescens) is a very large, powerful and intelligent terrestrial lizard native to South America. Adults are impressive animals capable of developing considerable size, strength and behavioural complexity.
Red Tegus are sometimes described as comparatively straightforward large lizards because well-socialised captive-bred individuals can become confident around their keepers. This should not obscure the considerable commitment involved in keeping one correctly.
An adult requires an enclosure measured in metres rather than a conventional vivarium, deep substrate for digging, powerful heating, appropriate UVB, substantial quantities of varied food, regular enrichment and secure construction capable of containing a strong and determined animal.
Tegus are active burrowers and spend significant time digging, exploring, basking and investigating their surroundings. They are intelligent enough to learn routines, recognise feeding cues and participate in voluntary target or station training.
Red Tegus are omnivorous. A balanced captive diet should contain varied whole-animal foods and invertebrates alongside appropriate plant material, rather than becoming dependent on rodents, meat or fruit.
Successful husbandry centres on space, deep substrate, intense but localised basking heat, measurable UVB, appropriate humidity, dietary variety, exercise, enrichment and respectful behavioural management.
Quick Facts
Scientific name: Salvator rufescens
Common name: Red Tegu, Argentine Red Tegu
Family: Teiidae
Native range: South America, principally Argentina, Paraguay and neighbouring regions
Lifestyle: Terrestrial and fossorial
Activity: Diurnal
Adult length: Commonly approximately 90–120+ cm total length; large males may exceed this
Adult weight: Several kilograms; large males can become extremely substantial
Lifespan: Approximately 15–20+ years with excellent care
Experience level: Intermediate to advanced
Diet: Omnivorous
Adult enclosure: Approximately 240 × 120 × 120 cm as a practical minimum for one adult; larger strongly preferred
Basking surface: Approximately 45–50°C, with larger adults sometimes selecting surfaces approaching 50–55°C when an adequate gradient is available
Warm ambient: Approximately 27–30°C
Cool area: Approximately 22–25°C
Night temperature: Approximately 20–24°C
UVB: Essential
Target basking UVI: Approximately 3.0–4.0
Practical UVB: High-quality linear T5 HO UVB covering a substantial portion of the basking area
Humidity: Approximately 60–80%, particularly within substrate and retreats
Substrate: Deep, moisture-retentive and suitable for burrowing
Handling: Can become manageable, but voluntary interaction and training are preferable
Social housing: Individual housing safest
Reproduction: Egg-laying
CITES: Appendix II
Natural Distribution
Red Tegus occur naturally in parts of South America, including:
- Argentina
- Paraguay
- Bolivia
- Parts of Brazil
They inhabit regions that experience meaningful seasonal changes.
Natural Habitat
Habitats can include:
- Dry woodland
- Scrub
- Grassland
- Forest margins
- Burrows
- Areas of seasonal rainfall
Red Tegus are strongly terrestrial and regularly dig or use existing burrows.
Appearance
Young Red Tegus may look considerably less red than mature adults.
Adult colouration can include:
- Brick red
- Rust
- Reddish brown
- Black
- Cream
- White
Colour intensity varies considerably between individuals.
Adult Males
Mature males develop:
- Broad heads
- Heavy bodies
- Pronounced jowls
- Powerful necks
- Substantial jaw musculature
Adult Size
Red Tegus are large reptiles.
Approximately:
90–120+ cm
total length is common.
Some large males can exceed this.
Anyone considering a juvenile should plan accommodation according to the adult, not the animal’s current size.
Growth
Young tegus can grow rapidly when maintained correctly.
A small juvenile enclosure is therefore only temporary.
The permanent adult accommodation should ideally be planned before acquiring the animal.
Lifespan
A Red Tegu represents a long-term commitment of approximately:
15–20+ years
with good care.
Intelligence
Tegus are highly intelligent reptiles.
They can learn:
- Feeding routines
- Keeper routines
- Target training
- Station training
- Voluntary crate entry
- Voluntary weighing
- Basic behavioural cues
Enrichment
Enrichment should be considered a routine component of care.
Suitable enrichment can include:
- Deep digging areas
- Buried food
- Scent trails
- Novel safe objects
- Different substrate textures
- Feeding puzzles
- Scatter feeding
- Supervised exploration
- Target training
Temperament
Individual temperament varies considerably.
Captive-bred animals raised with calm, consistent interaction often become relatively confident.
However, even a calm adult remains:
a large, powerful reptile
capable of inflicting serious injury.
Juvenile Behaviour
Young tegus may be:
- Nervous
- Defensive
- Fast
- Flighty
This does not necessarily predict adult temperament.
Handling
Handling should focus on:
trust and voluntary interaction
rather than physical restraint.
Allow the tegu to:
- Approach
- Investigate
- Climb onto the keeper voluntarily
where practical.
Do Not Chase the Animal Around the Enclosure
Repeated chasing and grabbing can teach the animal that the keeper represents a threat.
Training is generally more useful than forcing interaction.
Food Response
Large tegus can develop a powerful feeding response.
Use:
- Feeding tongs
- Feeding targets
- Predictable routines
Do not routinely hand-feed food directly from fingers.
Target Training
Target training can help distinguish:
feeding time
from:
routine enclosure access
This is particularly valuable with a large adult.
Bite Risk
Tegus possess:
- Powerful jaws
- Strong teeth
- Considerable bite force
Any large tegu should be treated with respect.
Tail
The muscular tail can also be used defensively.
Enclosure Size
For one adult, approximately:
240 × 120 × 120 cm
should be considered a practical minimum.
This is approximately:
8 × 4 × 4 ft
Larger accommodation is strongly preferred.
Bigger Adults Need Bigger Housing
A particularly large male may require substantially more room.
Where possible, consider:
300 × 150 cm or greater floor space
for very large individuals.
Floor Space
Floor space is more important than extreme height.
However, sufficient height is still required for:
- Deep substrate
- Heating
- UVB
- Safe lamp distances
Secure Construction
The enclosure must be extremely robust.
Tegus can:
- Dig
- Push
- Scratch
- Climb
- Test doors
- Move furnishings
Locks
Secure locks are strongly recommended.
A large tegu can push open inadequately secured doors.
Substrate
Deep substrate is essential.
Suitable mixtures may include:
- Organic topsoil
- Coco fibre
- Washed play sand
- Cypress mulch where appropriate
- Leaf litter
Substrate Depth
Provide approximately:
30–45 cm
where possible.
Deeper sections are beneficial.
Why Deep Substrate Matters
Burrowing provides:
- Security
- Exercise
- Humidity regulation
- Temperature regulation
- Natural behaviour
A tegu permanently maintained on a thin layer of substrate is being denied an important part of its behavioural repertoire.
Moisture Gradient
The substrate should not be uniformly wet.
Ideally provide:
- Drier surface areas
- Moist lower layers
- Humid burrowing zones
Hides
Provide at least one large secure retreat.
Ideally provide several.
A hide should allow the animal to feel:
enclosed and secure
rather than sitting exposed inside an oversized empty box.
Furnishings
Large tegus can rearrange lightweight furnishings.
Use:
- Heavy cork
- Large logs
- Secure rocks
- Strong platforms
Ensure nothing can collapse onto a digging animal.
Water
Provide constant access to fresh water.
The bowl should be large enough for the animal to:
- Drink comfortably
- Potentially soak if desired
Some adults require very substantial water containers.
Water Hygiene
Large tegus frequently soil water.
Check and replace it regularly.
Temperature Gradient
A large enclosure must provide a substantial thermal gradient.
Basking Surface Temperature
Provide a broad basking surface approximately:
45–50°C
Large adults may voluntarily utilise surfaces around:
50–55°C
provided cooler retreat areas are readily available.
Basking Surface, Not Air Temperature
This distinction is extremely important.
A basking surface may be around 50°C.
The surrounding enclosure air should not be 50°C.
Warm Ambient Temperature
Maintain warmer daytime areas around:
27–30°C
Cool Area
Provide cooler areas around:
22–25°C
Night Temperature
Night temperatures can generally fall to approximately:
20–24°C
Broad Basking Zone
A large adult needs a basking zone capable of warming much of its body simultaneously.
One small bulb producing a tiny hot spot is inadequate.
Multiple Heat Lamps
A bank of several overhead flood lamps is often more appropriate than one extremely powerful concentrated lamp.
This creates a:
wide, even basking zone
rather than one dangerously intense point.
Heat Source
Suitable sources include:
- Halogen floods
- Appropriate incandescent flood lamps
Heat Guards
All heat sources must be inaccessible to the animal.
A large tegu can reach equipment that may initially appear safely positioned.
Hot Rocks
Do not use electrically heated “hot rocks” as the primary heat source.
Overhead radiant heat provides a much more natural basking environment.
Temperature Measurement
Use:
Digital thermometers for ambient temperatures.
Use an:
Infrared thermometer for basking surfaces.
UVB
UVB is essential.
Red Tegus are diurnal reptiles that naturally expose themselves to sunlight.
Appropriate UVB supports:
- Vitamin D3 production
- Calcium metabolism
- Bone health
- Muscle function
- Normal growth
Target UVI
At the principal basking position, aim for approximately:
UVI 3.0–4.0
UV Gradient
Provide:
Main basking zone: approximately UVI 3–4
Surrounding illuminated area: approximately UVI 1–2
Shaded area: below UVI 1
Deep retreat/burrow: approaching UVI 0
What Does UVI Mean?
UVI means Ultraviolet Index.
It tells us how much biologically effective ultraviolet radiation reaches the animal at a particular location.
The tegu does not need UVI 3–4 everywhere.
It needs the choice to move between:
sun → partial shade → complete shade
What UVB Lamp Do I Actually Need?
For an adult Red Tegu enclosure, use a:
high-quality linear T5 HO UVB system
covering a substantial part of the basking zone.
Because adult enclosures are large and lamps may sit some distance above the animal, a moderate-to-high output UVB tube is commonly required.
Depending upon installation, this may often mean something around the:
6–12% UVB class
but the percentage printed on the tube does not determine the actual UVI reaching the animal.
What This Means in Practice
For somebody setting up a Red Tegu enclosure:
The animal needs a large basking area, not simply one lamp.
Position a quality linear T5 HO UVB tube so that it overlaps the basking area.
The tegu should therefore experience:
bright light + heat + UVB
when basking.
The rest of the enclosure should provide progressively more shade.
Should I Automatically Buy a 12% UVB Tube?
No.
The correct lamp depends on:
- Distance from the animal
- Reflector
- Mesh
- Lamp model
- Lamp age
- Basking platform height
A 6% tube at a shorter distance may provide more UV than a 12% tube positioned much farther away.
Large Enclosure Considerations
Because tegu enclosures are often:
- Tall
- Custom-built
- Fitted with deep substrate
lamp-to-animal distance can be considerable.
This is why installation matters as much as lamp percentage.
Measuring UV
The most accurate method is an appropriate:
UV Index meter
Measure UVI at approximately the height of the tegu’s back while it is basking.
If You Don’t Own a UV Meter
Use:
- A recognised quality linear T5 HO UVB system
- The manufacturer’s current distance guidance
- Appropriate lamp-to-animal distance
- Plenty of shade
Do not simply buy the strongest available lamp and mount it as close as possible.
UV Coverage
A tegu is a large-bodied reptile.
UVB should illuminate a meaningful portion of the animal, rather than only a small part of its head or back.
Visible Lighting
Provide bright visible daytime lighting.
Additional daylight LED lighting can substantially improve:
- Activity
- Circadian rhythm
- Enclosure brightness
- Natural behaviour
Heat, Light and UV Together
Ideally the main basking area combines:
bright visible light + heat + UVB
Photoperiod
Approximately:
11–13 hours of daylight
is suitable during active periods.
Seasonal adjustments may be appropriate.
Night Lighting
The enclosure should become dark at night.
Do not use visible:
- Red
- Blue
- Purple
night lamps.
Humidity
Aim generally for approximately:
60–80% humidity
with humid substrate and retreats.
Humidity Gradient
The entire enclosure does not need to remain at one humidity level.
Provide:
- Drier basking surface
- Moderate ambient humidity
- Moist substrate
- Humid burrows
Ventilation
Good ventilation remains essential.
High humidity should not produce stagnant air.
Misting
Misting can help maintain:
- Substrate moisture
- Humidity
- Hydration
However, the enclosure should not remain constantly soaked.
Diet
Red Tegus are:
omnivorous
Diet changes somewhat with age.
Juvenile Diet
Juveniles tend to consume a higher proportion of:
- Invertebrates
- Animal-based foods
Adult Diet
Adults should receive a varied combination of:
- Whole-animal foods
- Invertebrates
- Appropriate plant material
- Fruit in moderation
Suitable Invertebrates
Suitable feeders include:
- Locusts
- Roaches
- Crickets
- Snails
- Earthworms from safe captive sources
- Silkworms
- Black soldier fly larvae
Whole Prey
Appropriately sized whole prey can include:
- Rodents
- Quail
- Chicks
- Whole fish of suitable species
Whole prey provides:
- Muscle
- Bone
- Organs
- Connective tissue
Rodents Should Not Dominate
A tegu should not be maintained primarily on:
rodents
A rodent-heavy diet can provide excessive calories and contribute to obesity.
Lean Animal Foods
Other foods may include appropriate:
- Whole poultry items
- Eggs
- Seafood
depending on the overall diet.
Raw Meat Alone Is Not a Complete Diet
Feeding only:
- Minced beef
- Chicken breast
- Turkey mince
- Muscle meat
is nutritionally inadequate.
Muscle meat lacks the balance provided by whole prey and a properly formulated varied diet.
Fruit
Suitable fruit can include:
- Berries
- Papaya
- Mango
- Fig
- Melon
Fruit should form part of a varied diet rather than dominate it.
Vegetables and Plant Matter
Suitable plant foods may include:
- Squash
- Pumpkin
- Leafy greens
- Edible flowers
- Other appropriate vegetables
Dietary Variety
A good diet should not look identical at every meal.
Rotate foods to provide nutritional and behavioural variety.
Eggs
Egg can be offered as part of a varied diet.
Whole eggs should not become the sole staple.
Fish
Fish can provide useful variety.
Avoid relying heavily on species known to contain high levels of thiaminase.
Gut Loading
Feeder insects should be properly gut-loaded before use.
Calcium
Foods lacking sufficient whole bone or calcium should be supplemented appropriately.
Vitamin D3
When effective UVB is provided, dietary D3 should generally be used sparingly according to the overall diet and supplementation programme.
Multivitamin
A suitable reptile multivitamin may be used periodically.
Feeding Juveniles
Young, rapidly growing tegus can generally be fed:
daily or near-daily
with quantity adjusted according to growth and body condition.
Feeding Adults
Healthy adults can generally be fed:
approximately 2–4 substantial meals per week
depending upon:
- Meal composition
- Activity
- Body condition
- Season
- Reproductive condition
Obesity
Obesity is a significant captive husbandry problem.
A tegu should be:
- Strong
- Muscular
- Substantial
but not excessively fat.
Signs of Excessive Condition
Watch for:
- Excessive abdominal fat
- Very heavy jowls unrelated to normal male development
- Reduced activity
- Difficulty moving
- Persistent rapid weight gain
Exercise
Large enclosure size and enrichment are essential components of weight management.
Diet alone cannot compensate for chronic inactivity.
Feeding Enrichment
Food can be used to encourage:
- Digging
- Searching
- Following scent
- Moving between enclosure areas
- Puzzle solving
Social Housing
Individual housing is the safest general recommendation.
Adult Males
Adult males should not routinely be housed together.
Serious territorial aggression may occur.
Pair Housing
Breeding pairs should be introduced and monitored carefully.
Permanent cohabitation requires considerable space and experience.
Separate accommodation must always be available.
Sexing
Mature males generally develop:
- Broader heads
- Pronounced jowls
- Heavier bodies
- Larger overall size
Females are generally more lightly built.
Sexual Maturity
Sexual maturity depends upon:
- Growth
- Age
- Nutrition
- Seasonal cycling
Animals should not be deliberately bred simply because they have reached the minimum possible reproductive age.
Seasonal Behaviour
Red Tegus may show strong seasonal changes.
These can include:
- Reduced appetite
- Reduced activity
- Increased burrowing
- Extended periods of dormancy
Brumation / Seasonal Dormancy
Some individuals undergo a substantial winter dormancy.
Others maintained under stable captive conditions may show less pronounced seasonal behaviour.
Do Not Assume Every Inactive Tegu Is Brumating
Reduced activity can also result from:
- Illness
- Incorrect temperature
- Dehydration
- Nutritional problems
A sick animal should not simply be assumed to be entering brumation.
Before Planned Brumation
Only healthy animals in good body condition should undergo deliberate seasonal cycling.
Experienced veterinary advice is recommended where there is uncertainty.
During Dormancy
A dormant animal should not have undigested large meals sitting within the gastrointestinal tract.
Seasonal preparation should therefore be gradual and informed.
Breeding
Red Tegus are:
egg-laying
Seasonal Cycling
Successful breeding commonly involves seasonal changes in:
- Temperature
- Photoperiod
- Activity
Courtship
Breeding introductions require careful supervision.
Large adults are powerful animals and injuries are possible.
Nesting
Females require access to a secure nesting area containing deep suitable substrate.
Nest Substrate
Provide material that is:
- Deep
- Moist enough to hold structure
- Not waterlogged
- Warm
- Private
Clutch Size
Females can produce substantial clutches.
Approximately:
15–30+ eggs
may occur depending on:
- Female size
- Age
- Condition
Female Nutrition
Reproductive females require excellent:
- Calcium
- UVB
- Hydration
- Nutrition
Gravid Behaviour
A gravid female may display:
- Extensive digging
- Nest construction
- Restlessness
- Changes in appetite
- Defensive behaviour
Nest Guarding
Female tegus may become strongly defensive around nesting sites.
Respect behavioural changes and avoid unnecessary disturbance.
Egg Retention
Seek veterinary advice for:
- Persistent straining
- Severe lethargy
- Hind-limb weakness
- Abnormal abdominal swelling
- Failure to lay despite prolonged nesting behaviour
Incubation
Eggs are commonly incubated around:
28–30°C
under stable humid conditions.
Incubation Duration
Incubation commonly lasts approximately:
55–80+ days
depending upon temperature and conditions.
Egg Handling
Avoid unnecessary rotation after eggs are laid.
Hatchlings
Hatchlings require:
- Secure housing
- Deep substrate
- Appropriate basking
- UVB
- Humid retreats
- Fresh water
- Varied small foods
Hatchling Basking
Young tegus still require a genuinely warm basking surface.
Do not confuse small body size with a requirement for cool husbandry.
Hatchling UVB
Provide appropriate UVB from the beginning.
Rapid growth places substantial demands on calcium metabolism.
Hatchling Feeding
Suitable foods can include:
- Roaches
- Locusts
- Crickets
- Snails
- Black soldier fly larvae
- Small whole prey
- Appropriate plant matter
Quarantine
New tegus should undergo quarantine.
Approximately:
90 days minimum
is sensible.
Quarantine Monitoring
Record:
- Weight
- Appetite
- Faeces
- Urates
- Skin
- Shedding
- Respiration
- Activity
- Mobility
Parasite Screening
Veterinary faecal screening is valuable, particularly for animals of uncertain origin.
Captive-Bred Preference
Captive-bred animals should be strongly preferred.
Advantages include:
- Known history
- Better adaptation to captivity
- Reduced parasite concerns
- More predictable temperament
- Reduced pressure on wild populations
Shedding
Tegus commonly shed in sections.
Appropriate:
- Humidity
- Hydration
- Substrate moisture
support healthy shedding.
Toe and Tail Shed
Check carefully around:
- Toes
- Tail tip
for retained shed.
Metabolic Bone Disease
Inadequate:
- UVB
- Calcium
- Nutrition
can contribute to metabolic bone disease.
Possible signs include:
- Limb deformity
- Tremors
- Weakness
- Soft jaw
- Difficulty walking
- Fractures
Obesity-Related Problems
Chronic obesity can contribute to:
- Reduced mobility
- Organ disease
- Reproductive problems
- Shortened lifespan
Respiratory Disease
Warning signs include:
- Wheezing
- Clicking
- Nasal discharge
- Excess mucus
- Persistent open-mouth breathing when not basking
- Severe lethargy
Mouth Health
Check for:
- Swelling
- Abnormal saliva
- Damaged teeth
- Mouth lesions
Signs of Good Health
A healthy Red Tegu should generally display:
- Clear alert eyes
- Strong coordinated movement
- Regular basking
- Good appetite during active periods
- Healthy skin
- Normal faeces
- Strong muscular body condition
- Normal exploratory behaviour
Warning Signs
Seek veterinary advice for:
- Unexplained persistent food refusal outside expected seasonal behaviour
- Significant weight loss
- Limb weakness
- Tremors
- Jaw abnormalities
- Respiratory symptoms
- Persistent diarrhoea
- Severe lethargy
- Abnormal swelling
- Reproductive difficulty
Common Husbandry Mistakes
Buying a Baby Without Planning for the Adult
A juvenile becomes a very large lizard.
Adult Enclosure Too Small
A conventional medium-sized vivarium is not appropriate permanent housing.
Insufficient Substrate
Tegus need to dig.
Substrate Too Dry
Provide humid lower layers and retreats.
Whole Enclosure Too Hot
A very hot basking surface requires substantially cooler retreat areas.
Basking Spot Too Small
A large animal requires a broad heated surface.
No UVB
Tegus are diurnal basking reptiles.
Tiny UVB Lamp Over a Huge Animal
UV coverage should be meaningful across the basking zone.
Buying UVB Based Only on Percentage
Actual UVI depends upon distance and installation.
No UV Shade
The animal must be able to retreat from ultraviolet exposure.
Feeding Mainly Rodents
This encourages excessive calorie intake and poor dietary variety.
Feeding Only Raw Meat
Muscle meat alone is not nutritionally complete.
Too Much Fruit
Fruit should form only part of the diet.
Overfeeding
Adult tegus can become obese.
No Enrichment
Intelligent large lizards require behavioural opportunities.
Forceful Handling
Trust-building and training are preferable.
Hand Feeding
A powerful adult should learn clear feeding routines rather than associating fingers with food.
Assuming Winter Inactivity Is Always Normal
Illness can resemble seasonal dormancy.
Conservation and Trade
Red Tegus are regulated under CITES Appendix II.
International trade is therefore controlled.
Keepers should retain appropriate:
- Purchase documentation
- Breeder information
- Import documentation where applicable
- Evidence of lawful origin
National restrictions may also apply because large tegus have established invasive populations in some parts of the world.
Responsible Ownership
Before acquiring a Red Tegu, ensure you can provide:
- An adult enclosure measured in metres
- Approximately 240 × 120 × 120 cm minimum accommodation
- Deep diggable substrate
- Powerful but safely installed heating
- A broad basking zone
- A quality linear T5 HO UVB system
- Correct UV distance
- Bright visible lighting
- Humid burrowing areas
- Fresh water
- A highly varied omnivorous diet
- Whole prey and live invertebrates
- Appropriate plant matter
- Regular enrichment
- Training and behavioural management
- Secure locks
- Specialist reptile veterinary care
- Potentially 15–20+ years of commitment
Suitability
Advantages
- Highly intelligent
- Impressive appearance
- Fascinating natural behaviour
- Can become confident around keepers
- Responds well to training
- Varied omnivorous feeding
- Diurnal
- Long-lived
- Excellent species for experienced keepers able to provide sufficient space
Considerations
- Becomes extremely large
- Requires an enclosure measured in metres
- Requires deep substrate
- Heating a large enclosure can be expensive
- Requires substantial UVB coverage
- Eats considerable quantities of food
- Can become obese
- Powerful jaws and tail
- Seasonal behaviour can complicate husbandry
- Requires substantial enrichment
- Long lifespan
- Specialist veterinary care can be expensive
Summary
The Red Tegu (Salvator rufescens) is an intelligent, powerful and highly rewarding large lizard for keepers capable of meeting its substantial long-term requirements.
Successful husbandry centres on:
- Approximately 240 × 120 × 120 cm or larger adult accommodation
- Greater floor space for particularly large adults
- Approximately 30–45 cm or deeper substrate where possible
- Secure burrows and hides
- A broad basking surface around 45–50°C
- Access to hotter surfaces approaching 50–55°C where an excellent gradient exists
- Warm ambient temperatures around 27–30°C
- Cooler areas around 22–25°C
- Night temperatures around 20–24°C
- Approximately 60–80% humidity with humid substrate and retreats
- A quality linear T5 HO UVB system
- Approximately UVI 3–4 at the primary basking position
- Broad UVB coverage appropriate to the animal’s body size
- Lower UV exposure and complete shade elsewhere
- Bright visible daytime lighting
- Constant fresh water
- A varied omnivorous diet
- Whole prey and invertebrates
- Appropriate fruit and plant matter
- Avoidance of rodent-heavy and muscle-meat-only diets
- Careful weight management
- Regular enrichment
- Target and station training
- Respectful voluntary interaction
- Individual housing as the safest default
- Careful interpretation of seasonal dormancy
- Captive-bred animals strongly preferred
UVB in Simple Terms
If you’re standing at an expo looking at UVB tubes and “UVI 3–4” means absolutely nothing to you, the important part is much simpler.
A Red Tegu needs a proper linear T5 HO UVB tube, not just a tiny UV bulb at one end of a huge enclosure.
The UVB should overlap its main basking area.
Because adult tegu enclosures are large, many setups will use a tube somewhere within roughly the 6–12% UVB class.
But do not automatically buy the strongest one.
A 6% tube positioned closer can produce more UV at the tegu than a 12% tube positioned much farther away.
The correct setup depends upon:
lamp strength + distance + reflector + mesh + basking platform height.
Your enclosure should provide:
HOT + BRIGHT + UVB basking area
leading into:
lower UV → shade → dark burrow with virtually no UV
The tegu decides where it wants to be.
If you do not own a UV meter, use a reputable linear T5 HO system and follow the manufacturer’s current distance chart for the specific lamp and installation.
For a large species like a tegu, also remember that UVB coverage matters. The lamp should illuminate a useful proportion of the animal while it is basking, rather than producing one tiny patch of UV over a 1-metre lizard.
IMPORTANT INFORMATION:
This care sheet provides general husbandry guidance and does not replace species-specific research or veterinary advice. Individual requirements may vary.
Always check current legislation governing the acquisition, collection, import, transport, keeping, breeding or sale of reptiles in your jurisdiction.
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: August 2026