Olive Python (Liasis olivaceus) Care Sheet
The Olive Python is a very large, powerful python native to northern Australia. Named for its relatively uniform olive-brown colouration, it is one of Australia’s largest snake species and can exceed 4 metres in exceptional cases.
Despite their comparatively understated colouration, healthy Olive Pythons are impressive animals. Their smooth scales can display attractive iridescence, and their long, muscular bodies reflect an active terrestrial lifestyle.
Captive-bred Olive Pythons can become relatively calm and manageable, but their considerable adult size, strength, strong feeding response and substantial enclosure requirements make them suitable only for experienced keepers prepared to accommodate a genuinely large constrictor throughout its life.
Quick Facts
Scientific name: Liasis olivaceus
Common name: Olive Python
Family: Pythonidae
Origin: Northern Australia
Adult size: Commonly approximately 250–350 cm (8–11.5 ft), with exceptionally large individuals exceeding this
Lifespan: Approximately 20–30+ years with appropriate care
Activity: Primarily crepuscular and nocturnal, although daytime activity occurs
Lifestyle: Primarily terrestrial; capable climber and swimmer
Diet: Carnivorous
Reproduction: Egg-laying
Temperament: Often manageable when established, but extremely powerful
Experience level: Advanced
Taxonomy
The Olive Python is:
Liasis olivaceus
Two forms have traditionally been recognised:
- Liasis olivaceus olivaceus — Olive Python
- Liasis olivaceus barroni — Pilbara Olive Python
The Pilbara form has a considerably more restricted distribution.
Taxonomic treatment can change, so reliable locality and lineage information should be retained wherever available.
Natural History
Olive Pythons occur across northern Australia.
Habitats include:
- Rocky gorges
- Savanna woodland
- Open forest
- Escarpments
- River systems
- Waterholes
- Rocky outcrops
They frequently occur around permanent water sources, particularly in otherwise seasonally dry environments.
Natural retreats can include:
- Rock crevices
- Caves
- Hollow logs
- Dense vegetation
- Burrows
They are capable swimmers and may enter water voluntarily.
Appearance
Olive Pythons generally have relatively uniform dorsal colouration consisting of:
- Olive-brown
- Brown
- Grey-brown
- Greenish-brown
The underside is considerably lighter and may be:
- Cream
- White
- Pale yellow
Their smooth scales can produce attractive iridescence under suitable lighting.
Unlike many other large pythons, Olive Pythons generally lack prominent dorsal patterning.
The head is elongated and clearly differentiated from the neck.
Adult Size
Olive Pythons are among Australia’s largest snakes.
Adults commonly reach approximately:
250–350 cm (8–11.5 ft)
and exceptionally large individuals may exceed this.
Females can become particularly substantial.
Adult size should be taken seriously when considering this species.
A mature Olive Python is:
- Long
- Muscular
- Powerful
- Capable of exerting considerable force
The enclosure and handling arrangements required for a juvenile will be completely inadequate for a mature animal.
Enclosure
Olive Pythons require very large accommodation.
For an average adult, approximately:
300 × 120 × 120 cm (10 × 4 × 4 ft)
should be regarded as a practical minimum starting point rather than an ideal maximum.
Larger animals should be provided with correspondingly larger accommodation.
Where possible, dedicated reptile rooms or professionally constructed walk-in enclosures can provide considerably better opportunities for movement and environmental enrichment.
The enclosure should provide:
- Extensive floor space
- Multiple retreats
- Strong climbing structures
- Large water container
- Appropriate substrate
- Thermal gradient
- Environmental enrichment
Juvenile Enclosures
Juveniles can initially be maintained in smaller secure accommodation.
Provide:
- Warm-side hide
- Cool-side hide
- Fresh water
- Suitable substrate
- Strong branches
- Environmental cover
Young Olive Pythons can grow quickly.
The adult enclosure should therefore be planned before purchasing the animal.
Do not wait until the snake physically outgrows its enclosure before upgrading.
Enclosure Security
Olive Pythons are exceptionally strong.
Adult accommodation requires:
- Heavy-duty construction
- Strong doors
- Reliable locks
- Secure ventilation
- Protected cable openings
An adult can exert considerable pressure against doors and furnishings.
All branches, shelves and heavy decorations should be securely anchored.
Heating and lighting equipment must be inaccessible to the snake.
Hides
Provide multiple secure retreats.
At minimum, include:
- One warm-side hide
- One cool-side hide
Additional retreats at intermediate temperatures are strongly encouraged.
Suitable options include:
- Large cork structures
- Hollow logs
- Artificial rock retreats
- Purpose-built hides
A large snake still requires the opportunity to conceal itself completely.
Climbing Opportunities
Although primarily terrestrial, Olive Pythons are capable climbers.
Strong elevated structures can provide valuable enrichment.
Suitable options include:
- Heavy branches
- Logs
- Shelves
- Platforms
All structures must safely support the full weight of the snake.
Avoid unstable or excessively high structures that could cause injury if the snake falls.
Substrate
Suitable substrates include:
- Reptile-safe soil
- Coconut husk
- Cypress-type reptile substrate
- Naturalistic soil mixtures
- Other appropriate substrates
The substrate should be:
- Clean
- Low-dust
- Easy to maintain
- Deep enough to provide some behavioural choice
Avoid:
- Cedar
- Pine
- Artificially scented substrates
Large enclosures can incorporate different substrate depths and textures to increase environmental complexity.
Temperature & Heating
Provide a clear thermal gradient.
Suitable temperatures are approximately:
Basking/warm area: 31–33°C
Warm ambient area: approximately 27–29°C
Cooler area: approximately 23–26°C
Night: approximately 21–24°C
The snake must always be able to move away from the warm area.
The entire enclosure should never be maintained at basking temperature.
Basking Area
A very large snake requires a broad basking area.
A single small bulb may create a hot spot that warms only a small portion of the animal.
Multiple appropriately installed heat sources may be required to produce a basking zone capable of warming a substantial portion of the snake’s body evenly.
Surface temperatures should be measured using an infrared thermometer.
Heating
Suitable heating systems may include appropriately installed:
- Halogen basking lamps
- Deep heat projectors
- Ceramic heat emitters
depending upon enclosure design.
All heating equipment must be appropriately thermostatically controlled.
Internally mounted heat sources accessible to the snake must be securely guarded.
Large pythons are capable of pushing against equipment, so guards and fittings must be particularly robust.
Humidity
Olive Pythons generally do not require continuously tropical humidity.
A useful general range is approximately:
40–60% relative humidity
with normal fluctuations.
Humidity may be increased temporarily during shedding.
Access to:
- Fresh water
- Humid retreats
- Moisture-retaining substrate in selected areas
allows the snake to regulate its exposure.
Constantly wet or stagnant conditions should be avoided.
Humid Retreat
A humid retreat can be provided during shedding.
Suitable materials include:
- Damp sphagnum moss
- Moist coconut fibre
- Other appropriate moisture-retaining substrate
The contents should remain moist rather than saturated.
This allows access to higher humidity without increasing moisture throughout the entire enclosure.
Water
Fresh drinking water should be available at all times.
Olive Pythons are associated with waterways in the wild and may voluntarily soak or enter water.
Provide a large, stable container.
Where practical, the container should allow at least substantial portions of the snake to enter comfortably.
Water should be:
- Checked daily
- Changed regularly
- Replaced immediately when contaminated
Large snakes can contaminate water rapidly, so the container should be designed for easy cleaning.
Swimming
Olive Pythons are capable swimmers.
Where enclosure size and construction allow, access to a larger aquatic area can provide useful enrichment.
However:
- The water must remain clean
- Entry and exit must be easy
- Extensive dry areas must remain available
- The aquatic area must not compromise overall enclosure space
A swimming area is an addition to appropriate terrestrial accommodation, not a substitute for it.
Lighting
Provide a consistent day/night cycle.
Approximately:
10–12 hours of light per day
is suitable, with seasonal variation possible.
Bright visible lighting can help establish a clear daytime environment.
The enclosure should become genuinely dark at night.
Avoid red, blue or purple nighttime bulbs.
UVB
Low-level UVB can be incorporated into modern Olive Python husbandry.
A useful exposed basking target may be approximately:
UVI 1–2
with shaded retreats providing negligible exposure.
The snake must always be able to regulate its own exposure.
Actual UV intensity depends upon:
- Lamp output
- Reflector
- Distance
- Mesh
- Basking position
Environmental Enrichment
Olive Pythons are active snakes and benefit considerably from environmental complexity.
Suitable enrichment includes:
- Large logs
- Strong branches
- Multiple hides
- Different substrate depths
- Rock-style structures
- Large water areas
- Elevated platforms
- Vegetation
- Scent trails
- Occasional changes in enclosure layout
The environment should encourage:
- Exploration
- Climbing
- Swimming
- Concealment
- Foraging
- Thermoregulation
A very large enclosure that is almost completely empty does not provide adequate behavioural complexity.
Diet
Olive Pythons are carnivorous constrictors.
Wild prey can include:
- Rodents
- Other mammals
- Birds
- Reptiles
- Other suitable vertebrates
Large wild individuals are capable of consuming substantial prey.
However, the fact that a python can consume very large prey does not mean that oversized meals are appropriate in captivity.
Captive Diet
Appropriately sized whole prey can include:
- Rats
- Rabbits where appropriately sized
- Poultry
- Other suitable whole vertebrate prey
Dietary variety can be beneficial.
Whole prey provides:
- Muscle
- Bone
- Organs
- Fat
- Micronutrients
Prey should always be appropriate to the snake’s current size and body condition.
Frozen-Thawed Prey
Appropriately prepared frozen-thawed prey is strongly preferred.
This eliminates the risk of live prey injuring the snake.
Frozen prey should be:
- Completely thawed
- Appropriately warmed
- Presented using long feeding tongs
Never microwave whole frozen prey because uneven heating can create dangerous internal hot spots.
Prey Size
Offer prey that produces a modest visible swelling rather than extreme distension.
Oversized meals can increase the risk of:
- Regurgitation
- Digestive difficulty
- Injury
- Excessive calorie intake
Large constrictors should not routinely be fed the largest prey they are physically capable of swallowing.
Feeding Frequency
Juveniles can generally be fed approximately:
Every 5–7 days
depending upon prey size and growth.
Subadults may generally be fed approximately:
Every 7–14 days.
Healthy adults can often be fed approximately:
Every 14–21 days
depending upon:
- Prey size
- Body condition
- Activity
- Reproductive status
Large adults do not require constant heavy feeding.
Obesity
Obesity is a significant concern in captive large constrictors.
Potential causes include:
- Oversized prey
- Excessively frequent feeding
- Limited enclosure space
- Insufficient activity
Monitor:
- Body shape
- Muscle tone
- Weight trends
- Activity
A healthy Olive Python should remain muscular rather than excessively rounded.
Feeding Response
Olive Pythons can possess very strong feeding responses.
Large individuals can strike with considerable speed and force.
Useful management practices include:
- Long feeding tongs
- Washing hands after handling prey
- Avoiding prey scent during routine maintenance
- Establishing predictable husbandry routines
- Target or tap training
The keeper should always establish the snake’s location and behaviour before entering or reaching into the enclosure.
Target Training
Target training can be particularly useful with large pythons.
The snake can learn to associate a specific visual target with feeding.
This can help distinguish:
- Feeding sessions
- Cleaning
- Handling
- Routine enclosure access
Consistent training can improve safe management without relying upon punishment or unnecessary restraint.
Handling
Captive-bred Olive Pythons can become relatively manageable.
However, an adult remains an extremely powerful constrictor regardless of temperament.
When handling:
- Move calmly
- Support the body
- Avoid grabbing the head
- Avoid unnecessary restraint
- Allow controlled movement
Large adults should not be handled casually.
Large-Constrictor Handling
Safe handling practices become increasingly important as the snake grows.
Keepers should develop an appropriate handling protocol before the animal reaches adult size.
For large adults, having another capable adult present during handling or major enclosure maintenance is a sensible safety precaution.
Never:
- Place a large python around the neck
- Allow uncontrolled access to the face
- Handle immediately after presenting prey
- Underestimate an apparently calm animal’s strength
Responsible handling protects both the keeper and the snake.
Children & Large Pythons
Children should never handle a large Olive Python without direct, competent adult supervision.
A mature animal is considerably stronger than a child.
Interactions should always prioritise:
- Animal welfare
- Safe handling
- Controlled circumstances
Large constrictors should never be treated as props for photographs or entertainment.
Defensive Behaviour
A defensive Olive Python may:
- Hiss
- Form an S-shaped posture
- Strike
- Attempt to retreat
Persistent defensive behaviour can be associated with:
- Inadequate hides
- Excessive disturbance
- Feeding-associated behaviour
- Incorrect environmental conditions
- Stress
Husbandry should be reviewed before assuming the animal is simply aggressive.
Handling After Feeding
Avoid unnecessary handling for at least:
48–72 hours after feeding
and considerably longer after very substantial meals.
Large meals require significant digestion time.
The snake should be allowed to digest undisturbed at appropriate temperatures.
Shedding
Signs of an approaching shed include:
- Dull colouration
- Reduced iridescence
- Cloudy or blue eyes
- Reduced activity
- Possible feeding refusal
Appropriate hydration and access to suitable humidity generally support normal shedding.
After shedding, check:
- Eye caps
- Tail tip
- Overall skin
Repeated incomplete shedding indicates that hydration, humidity or general health should be reviewed.
Housing Multiple Snakes
Individual housing is generally recommended.
Olive Pythons do not require companionship.
Separate housing allows accurate monitoring of:
- Feeding
- Faeces
- Shedding
- Body condition
- Health
It also eliminates competition and substantially reduces the risk of feeding accidents.
Animals should only be introduced for breeding under controlled conditions.
Health
Potential health concerns include:
- Obesity
- Respiratory infections
- Mouth infections
- Scale problems
- Burns
- Dehydration
- Retained shed
- External parasites
- Internal parasites
- Regurgitation
- Reproductive complications
Warning signs include:
- Significant unexplained weight loss
- Persistent refusal to feed
- Repeated regurgitation
- Wheezing
- Open-mouth breathing
- Nasal discharge
- Excessive saliva
- Mouth swelling
- Neurological abnormalities
- Significant behavioural changes
Persistent or serious symptoms require assessment by a suitably experienced reptile/exotic veterinarian.
Respiratory Disease
Respiratory problems can be associated with inappropriate:
- Temperature
- Humidity
- Ventilation
- Hygiene
Possible signs include:
- Wheezing
- Clicking
- Nasal discharge
- Excessive saliva
- Open-mouth breathing
Suspected respiratory disease requires veterinary assessment.
Environmental conditions should also be reviewed.
Quarantine
All newly acquired Olive Pythons should undergo quarantine away from established reptiles.
During quarantine:
- Record body weight
- Monitor feeding
- Examine faeces
- Check skin
- Monitor breathing
- Check carefully for mites
- Observe behaviour
- Maintain separate equipment
Veterinary faecal testing may be appropriate where an animal’s previous history is uncertain.
Sexing
Olive Pythons can be sexed using established professional snake-sexing techniques.
These should only be performed by an experienced person.
Incorrect probing can cause serious injury.
External appearance alone should not be relied upon for definitive sex determination.
Breeding
Olive Pythons are egg-laying snakes.
Breeding should only be attempted with healthy mature animals in excellent body condition.
Breeding requires knowledge of:
- Accurate sexing
- Sexual maturity
- Seasonal cycling
- Pair introduction
- Courtship
- Female condition
- Egg development
- Egg laying
- Incubation
- Hatchling husbandry
Large adults should not simply be permanently housed together for breeding.
Seasonal Cycling
Captive breeding programmes may incorporate controlled seasonal changes.
These can involve gradual alterations to:
- Nighttime temperatures
- Photoperiod
- Feeding
- Humidity
Only healthy animals in appropriate body condition should undergo deliberate cycling.
Environmental changes should be gradual rather than abrupt.
Pair Introduction
Breeding introductions should be carefully monitored.
Observe for:
- Courtship
- Copulation
- Stress
- Defensive behaviour
Animals should be separated if either individual appears persistently stressed.
Accurate breeding records should be maintained.
Egg Laying
Females require access to an appropriate secure laying site.
The nest area should provide:
- Privacy
- Suitable temperature
- Appropriate moisture
- Sufficient space
Females should be monitored carefully during the reproductive period.
Difficulty laying eggs can become a veterinary emergency.
Maternal Incubation
Female Olive Pythons may coil around their eggs.
Maternal incubation may be possible under appropriately controlled environmental conditions.
Artificial incubation may also be used.
The chosen method should be thoroughly researched before breeding occurs.
Artificial Incubation
Eggs require carefully controlled:
- Temperature
- Moisture
- Gas exchange
Eggs should not be unnecessarily rotated after development has begun.
Breeders should research current species-specific incubation protocols before attempting reproduction.
Hatchlings
Hatchlings require:
- Secure individual accommodation
- Appropriate thermal gradients
- Multiple small hides
- Fresh water
- Suitable substrate
- Appropriately sized prey
Young Olive Pythons should be monitored individually for:
- First shed
- Feeding
- Body weight
- Defecation
- Normal development
Growth should be steady rather than accelerated through excessive feeding.
Responsible Sourcing
Captive-bred Olive Pythons should be strongly preferred.
Before acquiring an animal, establish where possible:
- Captive-bred status
- Age
- Sex
- Feeding history
- Health history
- Locality or lineage
Prospective owners should have a realistic plan for accommodating the animal at its full adult size.
Responsible Ownership
Olive Pythons can live for 20–30 years or longer.
Before acquiring one, consider:
- Potential adult length exceeding 3 metres
- Very large enclosure requirements
- Considerable physical strength
- Strong feeding response
- Whole-prey feeding
- Heating costs
- Specialist veterinary care
- Safe handling requirements
- Long lifespan
The relatively small size of a juvenile should never obscure the scale of the commitment involved.
An adult Olive Python requires substantially more space, food and management than most commonly kept pet snakes.
Never release a captive snake into the wild.
Summary
The Olive Python is one of Australia’s largest and most impressive snakes, combining considerable size and strength with attractive iridescence and an active, inquisitive nature.
Successful husbandry depends upon providing a very large and secure enclosure, broad heated areas, multiple retreats, strong climbing structures, access to clean water, appropriate humidity, extensive environmental enrichment and carefully controlled whole-prey feeding.
Their potential adult size and strength mean Liasis olivaceus should be considered an advanced species requiring substantial long-term planning.
With appropriate space, safe management, responsible feeding and high standards of husbandry, Olive Pythons can thrive in captivity for decades.
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: August 2026