Stimson’s Python (Antaresia stimsoni) Care Sheet
Stimson’s Python is a small Australian python valued for its manageable adult size, attractive patterning and generally straightforward captive husbandry. It belongs to the genus Antaresia, alongside the Children’s, Spotted and Pygmy Pythons.
Although considerably smaller than many python species, Stimson’s Pythons are active, capable climbers and inquisitive animals. They benefit from more than a simple small enclosure and should be provided with opportunities to climb, explore, hide and thermoregulate.
Captive-bred animals are generally hardy and manageable, making the species suitable for keepers prepared to provide appropriate long-term care.
Quick Facts
Scientific name: Antaresia stimsoni
Common name: Stimson’s Python
Family: Pythonidae
Origin: Australia
Adult size: Commonly approximately 70–100 cm (2.3–3.3 ft), occasionally larger
Lifespan: Approximately 15–25+ years with appropriate care
Activity: Primarily crepuscular and nocturnal
Lifestyle: Terrestrial and semi-arboreal
Diet: Carnivorous
Reproduction: Egg-laying
Temperament: Generally manageable; juveniles may initially be defensive
Experience level: Beginner to intermediate
Taxonomy
Stimson’s Python is classified as:
Antaresia stimsoni
The genus Antaresia also includes several other small Australian pythons commonly maintained in captivity.
These include:
- Children’s Python (Antaresia childreni)
- Spotted Python (Antaresia maculosa)
- Pygmy Python (Antaresia perthensis)
Taxonomy within this group has changed historically, and older literature may use different classifications.
Distribution
Stimson’s Python has a broad distribution across inland and western regions of Australia.
Populations occur across environments that can experience substantial seasonal and daily variations in temperature.
Geographic populations may also show differences in:
- Colour
- Pattern
- Adult size
- General appearance
Where animals are maintained as locality-specific breeding stock, accurate provenance should be retained.
Natural Habitat
Stimson’s Pythons inhabit a variety of environments including:
- Rocky outcrops
- Dry woodland
- Grassland
- Scrub
- Arid and semi-arid landscapes
They utilise natural refuges such as:
- Rock crevices
- Hollow logs
- Burrows
- Vegetation
- Other sheltered spaces
Although often described as terrestrial, they are capable climbers and may utilise elevated structures when available.
Appearance
Stimson’s Pythons are slender to moderately built snakes.
Typical colouration includes combinations of:
- Brown
- Reddish-brown
- Tan
- Cream
- Dark brown
The body generally displays darker blotches or irregular markings over a lighter background.
Appearance can vary substantially between different geographic populations.
Adult Size
Adults commonly reach approximately:
70–100 cm (2.3–3.3 ft)
although larger individuals can occur.
Their relatively modest adult size is one of the reasons the species is attractive to keepers who want a python without the substantial accommodation requirements of larger species.
Small adult size should not, however, be used as justification for excessively small accommodation.
Enclosure
For an average adult, approximately:
90 × 45 × 60 cm (3 × 1.5 × 2 ft)
provides a useful minimum starting point.
Larger accommodation is encouraged where practical.
The enclosure should provide:
- Usable floor space
- Climbing opportunities
- Multiple secure hides
- Appropriate substrate
- Fresh water
- Thermal gradient
- Environmental enrichment
Juvenile Enclosures
Hatchlings and young juveniles can initially be maintained in smaller secure accommodation.
Provide:
- Warm-side hide
- Cool-side hide
- Additional environmental cover
- Small climbing structures
- Fresh water
- Appropriate substrate
- Thermal gradient
Juveniles may become defensive when housed in excessively open environments.
Accommodation should be enlarged progressively as the animal grows.
Enclosure Security
Stimson’s Pythons are small, slender and capable of exploiting surprisingly small openings.
Enclosures require:
- Secure doors
- Reliable locks or catches
- Secure ventilation panels
- Protected cable openings
Young animals are particularly capable escape artists.
Check all enclosure gaps carefully before introducing the snake.
Hides
Provide at least:
- One warm-side hide
- One cool-side hide
Additional retreats are beneficial.
Suitable options include:
- Cork bark
- Small hide boxes
- Artificial rock shelters
- Hollow logs
- Crevice-style hides
The snake should be able to remain concealed while selecting different temperatures.
Climbing Opportunities
Stimson’s Pythons readily use elevated structures.
Provide:
- Branches
- Cork tubes
- Logs
- Elevated shelves
- Artificial rock ledges
Branches should offer different diameters and orientations.
All climbing structures must be securely anchored.
Substrate
Suitable substrates include:
- Reptile-safe soil mixtures
- Suitable bark-based substrates
- Aspen where environmental conditions are appropriate
- Other low-dust reptile substrates
- Paper-based substrate during quarantine where appropriate
Naturalistic enclosures can incorporate:
- Leaf litter
- Rocks
- Cork
- Different substrate depths
Avoid:
- Cedar
- Pine
- Artificially scented substrates
- Excessively dusty materials
Temperature & Heating
Provide a clear thermal gradient.
Suitable general temperatures are approximately:
Basking surface: 32–34°C
Warm ambient area: approximately 27–29°C
Cooler area: approximately 22–25°C
Night: approximately 20–23°C
The snake must always be able to retreat completely from the heated area.
Basking
Provide a defined basking area.
The basking surface should allow the snake to warm a useful portion of its body rather than creating one tiny concentrated hot spot.
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
The heating system should create a naturalistic thermal gradient.
All heating equipment must be appropriately thermostatically controlled.
Any internally mounted heat source accessible to the snake must be securely guarded.
Night-Time Temperatures
Stimson’s Pythons experience natural nighttime temperature reductions.
A moderate nighttime drop can therefore be provided.
Night temperatures of approximately:
20–23°C
are generally appropriate for healthy established animals.
Extremely cold conditions should be avoided.
Humidity
Stimson’s Pythons generally do not require permanently high humidity.
A useful general range is approximately:
40–60% relative humidity
with natural fluctuations.
Humidity can temporarily increase during:
- Shedding
- Misting
- Seasonal changes
The enclosure should not remain permanently damp.
Humid Hide
Provide access to a localised humid retreat, particularly during shedding.
Suitable materials include:
- Damp sphagnum moss
- Moist coconut fibre
- Other moisture-retaining reptile-safe substrate
The contents should remain damp rather than saturated.
This allows the snake to select increased humidity without requiring the entire enclosure to remain humid.
Ventilation
Good ventilation is important.
The enclosure should provide:
- Fresh air exchange
- Normal humidity fluctuations
- Surface drying
Persistently wet conditions can contribute to:
- Scale problems
- Bacterial growth
- Fungal growth
- Respiratory disease
Water
Fresh drinking water should be available at all times.
Provide a stable water bowl.
Water should be:
- Checked daily
- Changed regularly
- Replaced immediately when contaminated
The bowl should be large enough for comfortable drinking and occasional partial soaking.
Lighting
Provide a clear day/night cycle.
Approximately:
10–12 hours of light per day
is suitable, with seasonal variation possible.
Bright daytime illumination helps establish a strong photoperiod.
The enclosure should become genuinely dark at night.
Avoid coloured nighttime bulbs.
UVB
Low-level UVB can be incorporated into modern Stimson’s 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
Stimson’s Pythons are active animals and benefit considerably from environmental complexity.
Suitable enrichment includes:
- Branches
- Cork tubes
- Logs
- Rock structures
- Multiple hides
- Different substrate depths
- Leaf litter
- Artificial or live vegetation
- Scent trails
- Elevated resting areas
The enclosure should encourage:
- Exploration
- Climbing
- Concealment
- Basking
- Foraging
- Thermoregulation
Diet
Stimson’s Pythons are carnivorous constrictors.
Wild prey can include:
- Small mammals
- Lizards
- Birds
- Other appropriately sized vertebrates
Captive-bred animals generally accept appropriately sized rodents readily.
Captive Diet
Mice can form the principal captive diet.
Prey size should be appropriate to the snake’s:
- Age
- Size
- Body condition
Dietary variety can be incorporated where suitable and responsibly sourced.
Frozen-Thawed Prey
Appropriately prepared frozen-thawed prey is strongly preferred.
Live rodents can injure snakes.
Frozen prey should be:
- Completely thawed
- Appropriately warmed
- Presented using feeding tongs
Never microwave whole frozen prey because uneven heating can create dangerous internal hot spots.
Prey Size
Offer appropriately sized prey that produces a modest visible swelling.
Extremely large meals are unnecessary.
Smaller appropriately sized meals are preferable to prey that causes extreme abdominal distension.
Feeding Frequency
Hatchlings and young juveniles may generally be offered appropriately sized prey approximately:
Every 5–7 days
depending upon growth and body condition.
Subadults may generally be fed approximately:
Every 7–10 days.
Healthy adults may generally be fed approximately:
Every 10–14 days
depending upon:
- Prey size
- Body condition
- Activity
- Age
- Season
- Reproductive status
Feeding frequency should always be adjusted according to the individual animal.
Avoid Overfeeding
Stimson’s Pythons should not be power-fed.
Excessive feeding can contribute to:
- Obesity
- Excessively rapid growth
- Reduced activity
- Poor body condition
A healthy animal should remain muscular and well proportioned.
Seasonal Feeding Changes
Some established adults may naturally show changes in appetite associated with:
- Seasonal temperature changes
- Reproductive behaviour
- Environmental cycling
Short periods of feeding refusal are not necessarily abnormal in an otherwise healthy animal maintaining appropriate body condition.
Persistent or unexplained refusal should nevertheless prompt a husbandry and health review.
Feeding Response
Many Stimson’s Pythons have enthusiastic feeding responses.
Useful management practices include:
- Using feeding tongs
- Washing hands after handling prey
- Avoiding prey scent during maintenance
- Establishing predictable routines
Always establish the snake’s position and behaviour before reaching into the enclosure.
Temperament
Captive-bred Stimson’s Pythons are generally manageable.
Hatchlings and juveniles may initially be defensive and can:
- Strike
- Musk
- Attempt to escape
This behaviour often decreases as the animal becomes established.
Individual temperament varies.
Handling
Handle calmly and support the snake’s body.
When handling:
- Move slowly
- Avoid grabbing the head
- Avoid tight restraint
- Allow controlled movement
- Keep early sessions relatively short
Because the species is relatively small, particular care should be taken not to restrain it excessively.
Handling After Feeding
Avoid unnecessary handling for approximately:
48 hours after feeding
and longer following substantial meals.
Allow digestion to occur undisturbed at appropriate temperatures.
Shedding
Signs of an approaching shed include:
- Dull colouration
- Cloudy or blue eyes
- Reduced activity
- Possible temporary feeding refusal
Appropriate hydration and access to a humid retreat generally support complete shedding.
After shedding, check:
- Eye caps
- Tail tip
- Overall skin
Repeated incomplete sheds indicate that hydration, humidity or general health should be reviewed.
Housing Multiple Snakes
Individual housing is generally recommended.
Stimson’s Pythons do not require companionship.
Separate housing allows accurate monitoring of:
- Feeding
- Faeces
- Shedding
- Body condition
- Behaviour
- Health
Animals should normally only be introduced for controlled breeding.
Health
Potential health concerns include:
- Respiratory infections
- Mouth infections
- Burns
- Dehydration
- Retained shed
- External parasites
- Internal parasites
- Regurgitation
- Obesity
- Reproductive complications
Warning signs include:
- Significant unexplained weight loss
- Persistent feeding refusal
- Repeated regurgitation
- Wheezing
- Nasal discharge
- Excessive saliva
- Open-mouth breathing
- Mouth swelling
- Neurological abnormalities
- Significant behavioural changes
Persistent or serious symptoms require assessment by a suitably experienced reptile/exotic veterinarian.
Respiratory Health
Respiratory problems can be associated with inappropriate combinations of:
- Temperature
- Humidity
- Ventilation
- Hygiene
Possible signs include:
- Wheezing
- Clicking
- Nasal discharge
- Excessive saliva
- Open-mouth breathing
Suspected respiratory disease requires veterinary assessment.
Burns
Stimson’s Pythons are capable climbers and may reach poorly protected heating equipment.
Prevent thermal injury by:
- Thermostatically controlling heat sources
- Guarding internally mounted equipment
- Measuring surface temperatures
- Regularly inspecting heating fixtures
Suspected burns require prompt veterinary attention.
Quarantine
All newly acquired Stimson’s Pythons should undergo strict 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.
Captive-Bred Animals
Captive-bred animals should be strongly preferred.
Before acquisition, establish where possible:
- Captive-bred status
- Hatch date
- Feeding history
- Health history
- Sex
- Parentage
- Locality or lineage where relevant
Captive-bred animals generally adapt well to appropriate husbandry.
Sexing
Stimson’s Pythons can be sexed using established professional snake-sexing techniques.
These procedures 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
Stimson’s Pythons are egg-laying snakes.
Breeding should only be attempted with healthy mature animals in appropriate body condition.
Successful breeding requires knowledge of:
- Accurate sexing
- Sexual maturity
- Seasonal cycling
- Pair introduction
- Courtship
- Female condition
- Ovulation
- Egg development
- Egg laying
- Incubation
- Hatchling husbandry
Breeding Condition
Females should be physically mature and in excellent condition before breeding.
They should not be:
- Undersized
- Underweight
- Obese
- Unhealthy
Age, physical development and body condition are more meaningful than reaching an arbitrary body weight.
Seasonal Cycling
Captive breeding programmes commonly incorporate controlled seasonal environmental changes.
These may include gradual alterations to:
- Nighttime temperatures
- Photoperiod
- Feeding
Only healthy mature animals should undergo deliberate cycling.
Environmental changes should be gradual rather than abrupt.
Pair Introduction
Adults should normally be maintained individually and introduced specifically for breeding.
Monitor introductions for:
- Courtship
- Copulation
- Stress
- Defensive behaviour
Animals should be separated if persistent stress occurs.
Accurate breeding records should be maintained.
Egg Laying
A gravid female requires access to a secure nesting area.
The laying site should provide:
- Privacy
- Appropriate moisture
- Stable conditions
- Sufficient space
Females should be monitored carefully during the reproductive period.
Difficulty laying eggs can become a veterinary emergency.
Artificial Incubation
Eggs require carefully controlled:
- Temperature
- Moisture
- Gas exchange
Eggs should not be unnecessarily rotated after development has begun.
Current species-specific breeding information should be consulted before attempting incubation.
Hatchlings
Hatchlings should generally be housed individually.
Provide:
- Secure accommodation
- Warm and cool retreats
- Fresh water
- Appropriate humidity
- Suitable substrate
- Environmental cover
Each hatchling should be individually monitored for:
- First shed
- Feeding
- Body weight
- Defecation
- Hydration
- Normal development
Some hatchlings may initially require patience before establishing regular feeding.
Stimson’s vs Children’s Python
Stimson’s Python and Children’s Python are closely related members of Antaresia and are sometimes confused.
They are distinct species:
Stimson’s Python — Antaresia stimsoni
Children’s Python — Antaresia childreni
Both are relatively small Australian pythons, but their natural distributions, appearance and some aspects of ecology differ.
Reliable provenance is preferable to identification based solely upon colour or pattern.
Stimson’s vs Spotted Python
The Spotted Python is another closely related species:
Antaresia maculosa
Spotted Pythons generally become somewhat larger and possess characteristic patterning that differs from typical Stimson’s Pythons.
Captive breeding records should maintain accurate species identification.
Responsible Sourcing
Before acquiring a Stimson’s Python, establish where possible:
- Captive-bred status
- Age
- Sex
- Feeding history
- Health history
- Parentage
- Locality or lineage where relevant
Documented captive-bred animals should be strongly preferred.
Legal Considerations
Wildlife legislation varies between countries and can change.
Before acquiring, breeding, transporting, importing or exporting a Stimson’s Python, keepers should confirm all current requirements applicable to their jurisdiction.
Australia maintains strict controls over the export of native wildlife, meaning captive populations outside Australia generally descend from established captive lines.
Responsible Ownership
Stimson’s Pythons can live for 15–25 years or longer.
Before acquiring one, consider:
- Long-term enclosure requirements
- Whole-prey feeding
- Heating requirements
- Specialist veterinary care
- Long lifespan
Their small adult size makes them considerably easier to accommodate than many pythons, but it does not reduce the need for appropriate environmental complexity and long-term care.
Never release a captive snake into the wild.
Summary
Stimson’s Python is a small, attractive and active Australian python that can make an excellent captive species when maintained appropriately.
Successful husbandry depends upon providing adequate enclosure space, secure retreats, climbing opportunities, a well-defined thermal gradient, moderate humidity with access to a humid retreat, fresh water, environmental enrichment and appropriately controlled feeding.
Although sometimes maintained very simply because of its modest adult size, Antaresia stimsoni benefits considerably from a complex environment that allows climbing, exploration, concealment and behavioural thermoregulation.
Captive-bred animals are generally hardy and manageable, while their modest adult dimensions make them significantly easier to accommodate than larger python species.
With appropriate care and responsible sourcing, Stimson’s Python can thrive in captivity for many years.
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