KING COBRA (Ophiophagus hannah) CARE SHEET
The King Cobra (Ophiophagus hannah) is the world’s longest venomous snake and one of the most distinctive specialist reptiles in captivity. Native to South and Southeast Asia, it occupies forests, forest edges, bamboo thickets, plantations, river valleys and other warm, humid habitats.
King Cobras differ substantially from true cobras of the genus Naja. They are highly active, visually alert, capable climbers and specialist snake predators. They also display unusually complex reproductive behaviour for a snake, including nest construction by the female and nest guarding.
This species is capable of causing severe and potentially fatal envenomation. It is suitable only for highly experienced specialist venomous-reptile keepers with secure facilities, emergency procedures and all legally required permissions.
This care sheet provides comprehensive husbandry guidance. It is not a venomous-snake handling or restraint manual.
Captive-bred animals of documented provenance should be strongly preferred.
QUICK FACTS
Scientific name: Ophiophagus hannah
Common name: King Cobra
Family: Elapidae
Native range: South and Southeast Asia
Natural habitat: Tropical and subtropical forest, bamboo forest, forest edge, plantations and river-associated habitats
Lifestyle: Primarily terrestrial but highly capable of climbing and swimming
Activity: Predominantly diurnal, with activity varying according to climate and locality
Adult size: Commonly approximately 10–13 ft (3–4 m), with large individuals exceeding 14 ft (4.3 m)
Build: Long, muscular and highly mobile
Lifespan: Approximately 20+ years possible with excellent husbandry
Experience level: Specialist/expert venomous keepers only
Venomous: Yes — medically significant and potentially fatal
Adult enclosure: Purpose-built; approximately 10 × 5 × 6 ft (3 × 1.5 × 1.8 m) should be considered a practical starting point for many adults, with substantially larger accommodation preferred for very large individuals
Warm area: Approximately 29–31°C (84–88°F)
General daytime temperature: Approximately 25–28°C (77–82°F)
Cool retreat: Approximately 23–25°C (73–77°F)
Night: Approximately 22–25°C (72–77°F)
Humidity: Approximately 65–80%, with good ventilation and locality variation
Lighting: Approximately 11–12 hours daytime illumination
UVB: Low-level UVB may be provided as part of comprehensive modern husbandry
Target UVI: Approximately 0.5–1.5 in an accessible illuminated area with extensive shade
Diet: Predominantly other snakes in nature; captive diet requires careful planning
Social housing: Individual housing recommended
Reproduction: Oviparous — egg-laying
Clutch size: Commonly approximately 20–40 eggs
Quarantine: Approximately 90 days minimum is a sensible starting point
IMPORTANT VENOMOUS SPECIES WARNING
The King Cobra is a dangerously venomous snake.
A bite constitutes a medical emergency.
This species requires significantly more than general reptile-keeping experience.
Before acquisition, a prospective keeper should already have:
- Extensive specialist venomous-reptile experience
- Secure purpose-built accommodation
- Secondary containment
- Effective escape prevention
- Written emergency procedures
- Appropriate veterinary arrangements
- Knowledge of appropriate emergency medical facilities
- A plan for accidental escape
- A plan should the primary keeper become incapacitated
- Appropriate legal permissions where required
- A responsible backup person who knows what animals are present and how to summon appropriate assistance
Accommodation, containment, emergency arrangements and long-term feeding plans should be established before the snake is acquired.
SPECIES OVERVIEW
King Cobras are highly specialised elapids.
Unlike many other cobras, they feed predominantly on other snakes in nature.
The genus name Ophiophagus roughly means:
“snake-eater.”
Natural prey may include:
- Rat snakes
- Pythons
- Other colubrids
- Other venomous snakes
- Occasionally lizards
Their body plan reflects an active, mobile predator rather than a sedentary ambush snake.
Normal behaviour may include:
- Active exploration
- Visual tracking
- Climbing
- Swimming
- Searching for scent trails
- Investigating enclosure boundaries
- Using elevated resting positions
A King Cobra enclosure should therefore provide considerably more environmental complexity than a simple terrestrial snake enclosure.
ADULT SIZE & LIFESPAN
King Cobras commonly reach approximately:
10–13 ft (3–4 m)
with large individuals exceeding:
14 ft (4.3 m).
Exceptional animals may become even longer.
Their length alone creates major husbandry demands.
A mature King Cobra requires enough space to:
- Move freely
- Fully reposition
- Climb
- Thermoregulate
- Investigate
- Retreat from disturbance
LIFESPAN
Approximately:
20+ years
should be anticipated.
A keeper should therefore plan for decades of specialist care.
ENCLOSURE
King Cobras require large, secure, purpose-built accommodation.
For many adults, approximately:
10 × 5 × 6 ft
(approximately 3 × 1.5 × 1.8 m)
should be regarded as a practical starting point.
Very large individuals may require:
12 × 6 × 6 ft
or larger.
Because this species is active and capable of climbing, enclosure height is more useful than it would be for many large vipers.
The enclosure should allow:
- Meaningful locomotion
- Full-body repositioning
- Low and moderate climbing
- Thermoregulation
- Environmental investigation
- Multiple retreats
- Safe access to water
- Separation during routine servicing where possible
WHY LARGE ENCLOSURES ARE ESSENTIAL
King Cobras are not sedentary snakes.
They benefit from:
- Long travel paths
- Structural complexity
- Different elevations
- Visual barriers
- Secure hides
- Multiple thermal zones
Keeping a 10–12 ft active snake in a minimal enclosure because it can physically coil inside would not provide adequate behavioural opportunity.
SECURITY
A King Cobra enclosure must be:
- Extremely robust
- Escape-resistant
- Lockable
- Resistant to accidental opening
- Appropriately identified
- Located inside a secure dedicated room or facility
Pay particular attention to:
- Door gaps
- Ventilation openings
- Cable ports
- Service panels
- Locks
- Hinges
- Sliding-door tracks
King Cobras are active and inquisitive animals capable of persistently investigating enclosure weaknesses.
SECONDARY CONTAINMENT
The primary enclosure should exist within:
A SECURE SECONDARY ROOM OR FACILITY.
This surrounding area should:
- Prevent unauthorised access
- Reduce potential escape routes
- Allow safe visual assessment
- Form part of the emergency containment system
The safety system should be based upon multiple barriers rather than a single enclosure door.
ROUTINE HUSBANDRY DESIGN
Enclosure design should minimise unnecessary direct interaction.
Routine tasks such as:
- Water changes
- Spot cleaning
- Equipment checks
- Visual inspection
should be possible while reducing exposure to an uncontained animal.
Secure retreat compartments or separated enclosure sections can be particularly valuable with such an active species.
The enclosure should be designed so:
THE SYSTEM, NOT THE SNAKE’S TEMPERAMENT, PROVIDES SAFETY.
JUVENILE ENCLOSURES
Juveniles require smaller accommodation appropriate to their size, but the same standard of containment applies.
Juveniles are already dangerously venomous.
Provide:
- Secure hides
- Thermal gradient
- Suitable humidity
- Fresh water
- Appropriate lighting
- Environmental complexity
- Absolute escape prevention
Young King Cobras are fast, active and capable of exploiting very small gaps.
TEMPERATURE & HEATING
King Cobras inhabit warm tropical and subtropical environments.
Provide a thermal gradient.
WARM AREA
Approximately:
29–31°C (84–88°F)
GENERAL DAYTIME TEMPERATURE
Approximately:
25–28°C (77–82°F)
COOL RETREAT
Approximately:
23–25°C (73–77°F)
NIGHT
Approximately:
22–25°C (72–77°F)
Locality should be considered where known.
THERMAL GRADIENT
The enclosure should provide:
WARM AREA → MODERATE AREA → COOL RETREAT
The whole enclosure should not remain at the warm-area temperature.
A large active snake should be able to select its preferred temperature without being forced into one thermal zone.
HEATING EQUIPMENT
Suitable heating systems may include:
- Secure overhead radiant heating
- Radiant heat panels
- Appropriately protected ceramic heating
- Controlled room heating
All heating equipment should be:
- Thermostatically controlled
- Securely installed
- Protected from animal contact
- Suitable for humid environments
Avoid:
- Hot rocks
- Exposed heating elements
- Uncontrolled heat sources
TEMPERATURE MONITORING
Use reliable digital thermometers.
Monitor:
- Warm area
- General ambient temperature
- Cool retreat
An infrared thermometer is useful for checking surface temperatures.
Remember:
THERMOSTAT SETTING ≠ ACTUAL ENCLOSURE TEMPERATURE.
HUMIDITY
Maintain approximately:
65–80% relative humidity
with good ventilation.
Humidity varies naturally according to:
- Locality
- Rainfall
- Season
- Monsoon cycle
- Enclosure ventilation
The enclosure should not remain permanently saturated.
HUMIDITY GRADIENT
Provide:
- Moderately humid general conditions
- Drier surface areas
- More humid retreats
- Fresh drinking water
This allows the snake to select its preferred microclimate.
VENTILATION
Good ventilation is essential.
Aim for:
WARM + HUMID + WELL VENTILATED
rather than:
WARM + WET + STAGNANT.
Poor air exchange can contribute to:
- Respiratory problems
- Bacterial growth
- Mould
- Skin disease
WATER
Fresh clean water should remain continuously available.
King Cobras can swim well and may voluntarily soak.
A suitably sized adult water container should be:
- Stable
- Easily accessible
- Difficult to overturn
- Positioned with safe servicing in mind
Some larger purpose-built enclosures may incorporate a more substantial water feature, but it must remain hygienic and safe.
Replace contaminated water promptly.
SUBSTRATE
Suitable substrates can include:
- Soil-based tropical mixes
- Coco-based substrate
- Cypress-type mulch
- Orchid bark
- Appropriate mixed substrates
Substrate should:
- Buffer humidity
- Provide good traction
- Remain relatively low-dust
- Allow limited digging
- Avoid remaining waterlogged
SUBSTRATE DEPTH
Several inches of substrate provide useful:
- Moisture buffering
- Digging opportunity
- Behavioural complexity
Deeper sections can be provided where enclosure construction allows.
FURNISHINGS
King Cobras benefit from a structurally complex enclosure.
Useful furnishings include:
- Large cork sections
- Secure branches
- Low platforms
- Raised shelves
- Robust vegetation
- Visual barriers
- Multiple hides
- Leaf litter
All structures must be secure enough to support a large active snake.
CLIMBING
King Cobras are capable climbers.
Provide:
- Low to moderate branches
- Broad shelves
- Stable elevated resting areas
Avoid extremely narrow or unstable branches.
Any elevated structure should:
- Support the snake’s full weight
- Be securely anchored
- Avoid dangerous falls
- Remain compatible with safe enclosure servicing
HIDES
Provide several secure resting options.
At minimum:
- Warm retreat
- Cool retreat
- More humid retreat
Visual barriers are also useful for creating security in a large enclosure.
The snake should be able to move out of sight when it chooses.
ENVIRONMENTAL ENRICHMENT
King Cobras are among the more behaviourally active and responsive snakes kept in captivity.
Useful enrichment can include:
- Multiple travel routes
- Low climbing structures
- Different substrate textures
- Scent trails
- Leaf litter
- Rearranged safe furnishings
- Visual barriers
- Multiple resting elevations
Any enrichment must remain compatible with safe venomous-reptile husbandry.
LIGHTING
Provide a clear day/night cycle.
Approximately:
11–12 hours of daytime illumination
is appropriate for routine maintenance.
Seasonal adjustment can be provided where locality is known.
The enclosure should become properly dark at night.
Avoid visible:
- Red
- Blue
- Purple
night lighting.
UVB
King Cobras are not high-intensity UVB baskers.
However, they may encounter natural daylight and low-to-moderate UV exposure during daytime activity.
Low-level UVB may therefore be offered as part of comprehensive modern husbandry.
The important principle is:
LOW-LEVEL UVB + ENVIRONMENTAL CHOICE + COMPLETE SHADE.
TARGET UVI
A practical target is approximately:
UVI 0.5–1.5
in an accessible illuminated area.
Elsewhere provide:
LOWER UV → SHADE → COMPLETE UV RETREAT.
The snake should always be able to avoid ultraviolet exposure completely.
PRACTICAL UVB EQUIPMENT GUIDANCE
A quality:
LOW-OUTPUT LINEAR UVB SYSTEM
can be used.
The exact lamp required depends upon:
- Lamp model
- Reflector
- Enclosure height
- Distance
- Mesh
- Mounting position
- Lamp age
The practical target is:
UVI 0.5–1.5 AT SNAKE LEVEL
rather than a fixed lamp percentage.
UNDERSTANDING UVB DISTANCE
Remember:
CLOSER = GENERALLY MORE UV
FARTHER AWAY = GENERALLY LESS UV
MESH = USUALLY LESS UV
This is why the same UVB lamp can produce very different exposure in different enclosures.
UV GRADIENT
A useful arrangement is:
ILLUMINATED AREA: UVI approximately 0.5–1.5
↓
LOWER-UV AREA: Below UVI 0.5
↓
DEEP SHADE: Approaching UVI 0
Do not attempt to expose the entire enclosure to the target UVI.
UV METER
A suitable UV Index meter provides the most reliable way to verify actual exposure.
Measure approximately:
AT SNAKE LEVEL
in the illuminated area.
IF YOU DO NOT HAVE A UV METER
Use:
- A reputable linear UVB system
- Manufacturer’s current distance guidance
- Appropriate reflector
- Mesh guidance
- Extensive shaded areas
Do not compensate for uncertainty by installing an unnecessarily powerful lamp.
HEAT, UVB & VISIBLE LIGHT
These are separate components:
HEATING SYSTEM = TEMPERATURE
UVB SYSTEM = ULTRAVIOLET
DAYLIGHT LED = VISIBLE LIGHT
One does not automatically replace another.
DIET
The natural diet of the King Cobra is unusual.
King Cobras specialise primarily in eating:
OTHER SNAKES.
Natural prey may include:
- Rat snakes
- Pythons
- Colubrids
- Other venomous snakes
- Occasionally lizards
This dietary specialisation is one of the most important considerations in captive husbandry.
CAPTIVE FEEDING
Some captive King Cobras accept:
- Rats
- Mice
- Other conventional whole prey
particularly when conditioned from a young age.
Others retain a strong preference for snake prey.
A prospective keeper should never acquire the species assuming:
“It will definitely eat rats.”
A realistic feeding plan must exist before acquisition.
SNAKE-BASED PREY
Where snake prey is required, it should be:
- Legally sourced
- Appropriately sized
- Disease-risk assessed
- Obtained from known captive sources where possible
Do not use wild-caught snakes as routine feeders.
Wild reptiles may introduce:
- Parasites
- Infectious disease
- Environmental contaminants
- Legal complications
DIET TRANSITION
Some individuals may eventually accept non-snake prey.
However, feeding should not be based upon prolonged starvation in an attempt to force a dietary change.
Persistent refusal requires evaluation of:
- Temperature
- Security
- Stress
- Health
- Prey preference
- Husbandry
before assuming stubbornness.
WHOLE-PREY NUTRITION
Whole prey supplies:
- Protein
- Fat
- Bone
- Organs
- Micronutrients
A nutritionally appropriate whole-prey diet is preferable to feeding pieces of meat.
Muscle meat alone is not a complete diet.
FEEDING FREQUENCY
Feeding frequency depends heavily upon:
- Age
- Prey type
- Meal size
- Activity
- Body condition
JUVENILES
Approximately:
every 5–7 days
may be suitable depending upon prey size and growth.
SUBADULTS
Approximately:
every 7–10 days
may be suitable.
ADULTS
Many adults can be fed approximately:
every 10–14 days
depending upon prey size and body condition.
Large sedentary individuals may require longer intervals.
OBESITY
King Cobras should remain:
LEAN, LONG AND MUSCULAR.
Excessive feeding can result in:
- Fat deposition
- Reduced activity
- Organ disease
- Reproductive problems
- Reduced longevity
Do not power-feed juveniles simply to accelerate growth.
FEEDING SAFETY
King Cobras can display extremely strong feeding responses.
Routine husbandry should be designed to minimise unnecessary exposure during feeding.
Food should never be presented directly by hand.
This care sheet deliberately does not provide step-by-step venomous handling or feeding-manipulation techniques.
HANDLING & TEMPERAMENT
King Cobras should not be casually handled.
They are:
- Large
- Fast
- Alert
- Highly mobile
- Capable of substantial defensive elevation
A defensive King Cobra may:
- Raise a significant portion of the front body
- Spread the hood
- Track movement
- Hiss
- Strike
- Attempt to retreat
Individual temperament varies.
Some animals may appear comparatively calm.
Others may react readily to disturbance.
No behavioural presentation makes the species safe.
HOODING
King Cobras can raise a considerable portion of the body while hooding.
This gives them a defensive reach that can be surprising to anyone accustomed only to smaller Naja species.
The animal does not need to be fully hooded before it can bite.
Safety should never depend upon waiting for a defensive display.
COHABITATION
Individual housing is recommended.
This simplifies monitoring of:
- Feeding
- Weight
- Faeces
- Shedding
- Health
- Behaviour
and reduces complexity during routine husbandry.
Cannibalistic behaviour is a particularly important consideration in a species naturally specialised for eating snakes.
Routine permanent cohabitation is therefore inappropriate.
CLEANING & ROUTINE CARE
Regularly monitor:
- Water
- Faeces
- Urates
- Shed skin
- Substrate condition
- Temperature
- Humidity
- Equipment
- Signs of parasites
- General behaviour
Spot-clean contamination promptly.
The enclosure should be designed so routine husbandry can occur with minimal direct exposure.
QUARANTINE
All newly acquired animals should undergo strict quarantine.
Approximately:
90 DAYS MINIMUM
is a sensible starting point.
Longer quarantine may be appropriate for:
- Imported animals
- Animals of uncertain history
- Animals with suspected parasite exposure
- Animals showing clinical signs
Use dedicated:
- Water containers
- Cleaning equipment
- Husbandry tools
where practical.
Monitor:
- Weight
- Feeding
- Faeces
- Shedding
- Respiration
- Skin
- Mouth
- Behaviour
Veterinary examination and parasite screening are strongly recommended.
COMMON HEALTH CONCERNS
RESPIRATORY DISEASE
Possible signs include:
- Wheezing
- Clicking
- Nasal discharge
- Excess oral mucus
- Persistent abnormal open-mouth breathing
Potential contributing factors include:
- Excessive cooling
- Poor ventilation
- Persistently wet conditions
STOMATITIS
Possible signs include:
- Oral swelling
- Discharge
- Damaged tissue
- Abnormal mouth position
Veterinary assessment is required.
PARASITES
Possible signs include:
- Weight loss
- Poor condition
- Abnormal faeces
- Visible mites
- Reduced appetite
Snake-based prey sources must also be considered as a potential disease pathway.
SKIN PROBLEMS
Constantly wet or contaminated substrate can contribute to:
- Dermatitis
- Scale damage
- Bacterial infection
DYSECDYSIS
Poor shedding may be associated with:
- Dehydration
- Inappropriate humidity
- Parasites
- Underlying illness
OBESITY
Maintain a lean muscular condition rather than maximum body mass.
SIGNS OF GOOD HEALTH
A healthy King Cobra should generally display:
- Clear eyes outside shedding
- Clean nostrils
- Quiet respiration
- Smooth intact scales
- Strong muscular body condition
- Active tongue-flicking
- Alert behaviour
- Appropriate feeding response
- Normal faeces
- Complete healthy sheds
WHEN TO SEEK VETERINARY ADVICE
Seek appropriately experienced reptile veterinary care for:
- Respiratory symptoms
- Oral or nasal discharge
- Significant unexplained weight loss
- Persistent abnormal food refusal
- Repeated regurgitation
- Skin lesions
- Burns
- Abnormal swelling
- Persistent abnormal faeces
- Significant injury
- Reproductive problems
- Major unexplained behavioural changes
VETERINARY PLANNING
Appropriate veterinary support should be identified before acquisition.
A veterinarian treating reptiles may still lack facilities for a:
10–14 ft dangerously venomous snake.
The veterinary practice should know:
- Exact species
- Venomous status
- Approximate size
- Reason for presentation
before transport occurs.
Never unexpectedly arrive at a veterinary clinic with a King Cobra.
EMERGENCY PLANNING
A written emergency plan should exist before the animal enters the facility.
It should include:
- Exact species present
- Relevant emergency medical arrangements
- Appropriate emergency contacts
- A plan should the primary keeper become incapacitated
- Details of appropriately competent backup assistance
Other responsible people associated with the premises should know that venomous reptiles are present and know how to summon assistance without entering the secure area.
Any suspected King Cobra bite requires:
IMMEDIATE EMERGENCY MEDICAL ASSESSMENT.
Do not rely upon improvised home treatment.
ESCAPE PLANNING
A written escape plan is essential.
This is particularly important with such a:
- Large
- Active
- Mobile
- Intelligent
snake.
The secure facility should be designed to prevent an escaped animal from reaching an uncontrolled area.
People without appropriate specialist competence should not attempt to capture an escaped King Cobra.
Prevention through secure enclosure and room design is substantially safer than attempting recovery.
BREEDING
King Cobras are:
OVIPAROUS — EGG-LAYING.
Their reproductive behaviour is unusual among snakes.
NEST BUILDING
The female King Cobra is famous for constructing a nest.
She may gather:
- Leaves
- Vegetation
- Other plant material
into a mound-like nesting structure.
This behaviour should be accommodated in breeding setups rather than preventing the female from expressing it.
NEST GUARDING
Females may remain near and defend the nesting area.
This behaviour makes breeding management particularly demanding in a dangerously venomous species.
Breeding should only be attempted by specialist keepers with:
- Secure facilities
- Extensive experience
- Appropriate nesting accommodation
- Incubation equipment
- Secure facilities for offspring
- Emergency planning
- Legal compliance
CLUTCH SIZE
A typical clutch may contain approximately:
20–40 eggs
although variation occurs.
Large clutches require substantial advance planning.
EGG-LAYING SITE
Provide a secure nesting area containing:
- Deep suitable substrate
- Leaf litter
- Plant material
- Appropriate humidity
- Privacy
- Stable temperature
The female should be able to construct and use the nest without being forced into an exposed laying site.
INCUBATION
Eggs are generally incubated at approximately:
28–30°C (82–86°F)
with stable humidity.
Incubation often lasts approximately:
60–90 days
depending upon temperature and conditions.
Eggs should not be:
- Overheated
- Allowed to dry excessively
- Left sitting directly in free water
HATCHLINGS
King Cobra hatchlings are:
DANGEROUSLY VENOMOUS FROM HATCHING.
They are also:
- Active
- Fast
- Slender
- Capable of exploiting extremely small gaps
Each hatchling requires secure specialist accommodation.
Individual housing allows easier monitoring of:
- Feeding
- Weight
- Shedding
- Faeces
- Health
HATCHLING FEEDING
Some hatchlings may show a strong preference for snake prey.
A breeder must therefore have a realistic, lawful and hygienic feeding plan for potentially dozens of snake-eating venomous juveniles before breeding occurs.
This is one of the most important practical considerations in breeding King Cobras.
LEGAL CONSIDERATIONS — REPUBLIC OF IRELAND
The Republic of Ireland is not governed by the UK’s Dangerous Wild Animals Act.
A British Dangerous Wild Animals licence should therefore not be presented as a legal requirement for keeping a King Cobra in the Republic of Ireland.
However, anyone acquiring, keeping, breeding, transporting, importing, exporting or transferring a dangerously venomous reptile in the Republic of Ireland must check all legislation and requirements applicable at the time.
Relevant considerations may include:
- Animal health and welfare legislation
- Import and export controls
- CITES requirements where applicable
- Transport requirements
- Public-safety responsibilities
- Property, tenancy and insurance restrictions
Always verify the current Republic of Ireland position before acquisition, importation or transfer.
LEGAL CONSIDERATIONS — NORTHERN IRELAND
Northern Ireland has separate dangerous wild animal legislation.
The relevant framework includes the:
Dangerous Wild Animals (Northern Ireland) Order 2004.
Dangerously venomous elapid snakes fall within the Northern Ireland licensing framework.
A prospective keeper should verify the current requirements with the appropriate authority and obtain any required licence before acquiring the animal.
LEGAL CONSIDERATIONS — GREAT BRITAIN
In Great Britain, dangerous wild animal keeping is regulated under the:
Dangerous Wild Animals Act 1976
together with the applicable current schedule and subsequent legislation.
Elapid snakes, including King Cobras, fall within the dangerous-wild-animal licensing framework.
Anyone intending to keep a King Cobra in England, Scotland or Wales should verify the current licensing requirements with the relevant local authority before acquisition.
CITES & INTERNATIONAL TRADE
King Cobras are internationally regulated wildlife.
Any international acquisition, sale or transfer should be accompanied by all documentation required under the applicable current CITES and wildlife-trade rules.
Keep:
- Breeder records
- Purchase records
- Identification records
- Import/export documentation
- CITES documentation where required
- Transfer records
for the life of the animal.
Never assume that possession of the animal alone demonstrates lawful origin.
IMPORTANT JURISDICTION DISTINCTION
For readers in Ireland and the UK:
REPUBLIC OF IRELAND ≠ NORTHERN IRELAND ≠ GREAT BRITAIN
Their legal frameworks are not interchangeable.
The Dangerous Wild Animals legislation applicable in Great Britain does not apply in the Republic of Ireland.
Compliance in one jurisdiction does not automatically establish compliance in another.
This is particularly important when animals are:
- Purchased
- Sold
- Transported
- Imported
- Exported
- Moved between jurisdictions
RESPONSIBLE OWNERSHIP CHECKLIST
Before acquiring a King Cobra, ensure you can provide:
- Extensive specialist venomous-reptile experience
- Secure dedicated reptile facility
- Lockable escape-resistant purpose-built enclosure
- Secondary containment
- Approximately 10 × 5 × 6 ft or larger adult accommodation
- Considerably larger accommodation for exceptionally large individuals
- Appropriate climbing structures
- Multiple secure retreats
- Correct thermal gradient
- Suitable humidity
- Good ventilation
- Fresh water
- Appropriate substrate
- Environmental complexity
- Clear day/night lighting
- Optional low-level UVB
- Realistic long-term feeding plan
- Access to lawful appropriate prey
- Controlled body condition
- Strict quarantine
- Specialist veterinary arrangements
- Written medical emergency plan
- Written escape plan
- Responsible backup arrangements
- Secure transport
- Correct legal permissions
- Appropriate provenance documentation
- Long-term financial resources
- Potentially 20+ years of specialist care
COMMON HUSBANDRY MISTAKES
Underestimating adult size
King Cobras can exceed 12 ft.
Enclosure too small
They are highly active snakes requiring substantial usable space.
Insufficient enclosure height
They readily use secure elevated structures.
Poor enclosure security
King Cobras actively investigate their environment.
No secondary containment
The primary enclosure should exist within a secure room or facility.
Whole enclosure too warm
Provide a genuine thermal gradient.
Keeping everything permanently wet
High humidity does not require saturated conditions.
Poor ventilation
Warm stagnant humidity can contribute to disease.
Sparse enclosure
Provide multiple hides, visual barriers and structural complexity.
Using excessive UVB
Only low-level UV exposure with complete shade is appropriate.
Choosing UVB solely by lamp percentage
Actual UVI at the animal matters.
Assuming the snake will eat rats
Many King Cobras retain strong snake-prey preferences.
No lawful snake-prey plan
Dietary requirements must be planned before acquisition.
Using wild-caught prey snakes
This creates disease, welfare and potentially legal risks.
Power-feeding juveniles
Maximum growth is not the goal.
Casual handling
This is a very large dangerously venomous snake.
Depending upon temperament for safety
Containment systems should provide safety.
No veterinary plan
Not every reptile clinic can manage a giant venomous snake.
No emergency plan
Medical and escape arrangements must exist before acquisition.
Breeding without planning for nest guarding
Female reproductive behaviour complicates management.
Breeding without feeding plans for hatchlings
Young may require snake prey.
Assuming UK DWA legislation applies in the Republic of Ireland
It does not.
HUSBANDRY SUMMARY
Adult size: Commonly approximately 10–13 ft (3–4 m), with larger individuals possible
Adult enclosure: Approximately 10 × 5 × 6 ft (3 × 1.5 × 1.8 m) as a practical starting point; 12 × 6 × 6 ft or larger for very large individuals
Lifestyle: Primarily terrestrial but capable climber and swimmer
Warm area: Approximately 29–31°C (84–88°F)
General daytime temperature: Approximately 25–28°C (77–82°F)
Cool retreat: Approximately 23–25°C (73–77°F)
Night: Approximately 22–25°C (72–77°F)
Humidity: Approximately 65–80%
Ventilation: Essential
Water: Fresh water continuously available
Lighting: Approximately 11–12 hours daytime illumination
UVB: Optional low-level linear UVB
Target UVI: Approximately 0.5–1.5 with extensive complete shade
Diet: Predominantly snakes naturally; captive diet must be planned individually
Adult feeding: Commonly approximately every 10–14 days depending upon prey type, meal size and body condition
Housing: Individual housing recommended
Handling: Specialist venomous-reptile management only
Reproduction: Egg-laying
Nest building: Yes
Clutch: Commonly approximately 20–40 eggs
Incubation: Approximately 28–30°C (82–86°F)
Incubation period: Approximately 60–90 days
Hatchlings: Dangerously venomous from hatching and may prefer snake prey
Lifespan: Approximately 20+ years possible
Quarantine: Approximately 90 days minimum as a sensible starting point
Experience: Specialist/expert
Captive-bred: Strongly preferred
PRACTICAL UVB SUMMARY
For a King Cobra, comprehensive modern husbandry may include:
LOW-LEVEL UVB + EXTENSIVE SHADE + COMPLETE UV RETREAT
A suitable linear UVB system may provide approximately:
UVI 0.5–1.5
in part of the usable enclosure.
The exact lamp required depends upon:
- Lamp model
- Reflector
- Distance
- Mesh
- Enclosure construction
Remember:
CLOSER = GENERALLY MORE UV
FARTHER AWAY = GENERALLY LESS UV
MESH = USUALLY LESS UV
and:
HEAT = TEMPERATURE
UVB = ULTRAVIOLET
DAYLIGHT LED = VISIBLE LIGHT
These perform separate functions.
The whole enclosure should not receive the target UVI.
The animal must always be able to choose complete shade.
IMPORTANT INFORMATION
This care sheet provides general husbandry guidance and does not replace species-specific research, specialist practical training, legal advice or veterinary advice. Individual requirements may vary, particularly between geographical populations.
The King Cobra (Ophiophagus hannah) is a very large dangerously venomous snake capable of causing severe and potentially fatal envenomation. It is suitable only for highly experienced specialist keepers with secure purpose-built facilities, emergency procedures and all legally required permissions.
This care sheet deliberately does not provide step-by-step instructions for handling, restraint or physical manipulation of venomous snakes.
The Dangerous Wild Animals legislation applicable in Great Britain does not apply in the Republic of Ireland. Northern Ireland has separate dangerous wild animal legislation. Always verify the current requirements for the jurisdiction in which the animal will actually be kept.
International trade in King Cobras is subject to wildlife-trade controls. Verify all current CITES and import/export requirements before any international movement.
Captive-bred animals of documented provenance should be strongly preferred.
If you have concerns about an animal’s health or care, consult a suitably experienced reptile veterinarian who is prepared and equipped to work with very large dangerously venomous snakes.
Information correct at the date of publication.
reptilecommunity.com | Revised: August 2026