Pet Boa Constrictor Care Sheet
By Maria Zayas, DVM
Published Aug. 18/2023
Boa Constrictor Species Overview
The term “boa constrictor” is used to describe members of the Boidae family of snakes, which consists of over 40 species of nonvenomous constrictors. Boas can be found in South America, Central America, & the Caribbean.
Boas are usually calm, solitary snakes but will hiss loudly if they feel threatened. To detect prey, boas have heat-sensing pits on the sides of their heads & small, hook shaped teeth that help them hang on to prey while they constrict around them.
Male boas are smaller, averaging 4 feet in length, than the females which grow to an average of 5 feet long. They have thick bodies with arrow shaped heads that have distinct stripes running from their snouts to the back of the head.
These snakes also have cream- to gray-colored bodies with markings including ovals, circles or diamonds which are red, green, or yellow with a black outline. These patterns serve as camouflage in the wild.
Boa Constrictor Characteristics
Difficulty of Care - Intermediate
Average Lifespan - Up to 30 years with proper care
Average Adult Size - Up to 6 feet long, depending on species
Diet - Carnivore
Minimum Habitat Size - 20+ gallons for juveniles; 75+ gallons for adults, depending on the length of the snake’s body
Pet Boa Constrictor Supply Checklist
To keep a boa happy & healthy, pet parents should have these basic supplies on hand:
- Appropriately-sized habitat (20+ gallons for juveniles; 75+ gallons for adults, depending on the length of the snake’s body)
- Substrate
- Sphagnum moss
- Water dish
- Hideaway place
- Climbing decor
- Plants
- Heat light/emitter
- Heat fixture
- Under-tank heater
- Thermometers
- Humidity gauge
- Low-level UV bulb
- UV bulb fixture
- Separate feeding tank
Boa Constrictor Habitat
Boas need a well-ventilated habitat that's secured with a screened lid to prevent escapes. The habitat should be large enough for a boa to stretch out fully & exercise comfortably.
At a minimum, juvenile boas can comfortably live in a 20-gallon long enclosure (30” L x 12” W x 12” H). As the snake enters adulthood, the size of the habitat must be increased to accommodate its growth.
A boa will reach its adult side within 3–5 years with proper care. Boas can reach lengths of up to 6 feet long in adulthood, & pet parents must be prepared to maintain an enclosure that’s at least the same length as the snake’s body.
Setting Up Your Habitat
Boas are solitary animals that should be housed alone. Keeping more than one boa in the same habitat can encourage stress, aggression, & competition.
Temperature
Boas need a thermal gradient in their enclosure so they can warm up & cool down as needed. The recommended temperature for the warm end of a boa’s habitat is 90–95 F, while the cooler/nighttime end should be kept around 75–80 F. Tank temperatures should not fall below 80 F at night.
Check the temperatures of your boa’s habitat daily. At least 2 thermometers—one in the warm area & one in the cool area—should be placed in the enclosure so that both zones can be checked at once. A digital point-&-shoot thermometer can also be used to read habitat temperatures instantly.
Light & Heat Sources
Install an over-the-tank basking lamp with a heat bulb to supply radiant heat in your snake’s habitat. The wattage needed for the bulb depends on the size of the enclosure, the distance of the bulb from the snake, & the ambient temperature of the room where the enclosure is kept. Adjust the wattage of the bulb to maintain the recommended temperature gradient within the tank.
Note: Some light bulbs provide not only light to the tank but also heat &/or ultraviolet (UV) light.
When adding heat support to your boa’s tank, keep a few things in mind:
Heat sources should be attached to a thermostat to keep temperatures within a safe & comfortable range.
In some climates, under-tank heating pads can be used with over-tank heating bulbs to maintain appropriate tank temperatures. Under-tank heat mats must always be attached to a thermostat to help ensure that pets sitting on them do not get burned.
Never use hot rocks as a heat source, as they can burn reptiles.
Lightbulbs should never be placed inside a snake’s habitat & should instead be suspended above the enclosure with a light fixture. Otherwise, the snake may try to curl itself around the bulb, causing severe burns.
Although boas are nocturnal animals, daily exposure to UVA/UVB light can improve immune system function & promote normal behavior in all reptiles. As a rule of thumb, you should provide your boa 10–12 hours of UV light daily to imitate natural sunlight.
UV lights should be placed about 12–18 inches from where the reptile sits. Replace lights every 6 months as their potency wanes over time.
White lights should not be left on continuously, as it will disrupt the snake’s natural sleep cycle & negatively affect their overall health. At night, turn off lights inside the snake’s enclosure, or switch to a nocturnal or infrared light to ensure the snake can rest.
Humidity
Boas need humidity in their environment to stay hydrated, support their respiratory systems, & encourage healthy shed cycles.
The ideal humidity range for a boa’s habitat is 40% to 60%. During shedding cycles, increase the enclosure’s humidity to around 70%. Use a hygrometer (humidity gauge) to measure the enclosure’s humidity every day.
During shedding, add a humid hide packed with moistened sphagnum moss to your boa’s habitat to boost humidity levels in the enclosure. Be sure to change the moss frequently to prevent mold growth.
Substrate
Ideally, there should be enough substrate at the bottom of a boa’s enclosure to allow for digging, burrowing, & hiding. Paper-based bedding, cypress mulch, coconut husk, & Aspen wood shavings are all suitable choices for substrate.
Pine & cedar chips should not be used, as they have oils that can irritate a snake’s skin & cause respiratory illness. Reptile carpet should also be avoided, as it is too abrasive & will prevent the snake from digging & burying.
If aspen is used as a substrate, it must be replaced weekly to prevent the bedding from getting excessively wet or soiled.
If wood shavings, mulch, or coconut husk bedding of any kind is used, the snake should be fed in a separate enclosure without any substrate. Otherwise, the snake may accidentally consume bedding particles that are indigestible & can cause gastrointestinal obstruction.
Decor & Accessories
Hiding Area
Provide your boa with at least 2 hiding areas—one kept on the warmer side of the enclosure & one on the cooler side. Aside from offering the snake some privacy, hideouts can help boas regulate their body temperature, as they give the snake a space away from their enclosure’s direct basking area.
Monitor your snake's behavior to be sure they are not hiding constantly, as they won’t have a chance to benefit from UV exposure.
Synthetic or natural wood hiding logs are recommended. Hiding logs should always be large enough for the snake to fit inside comfortably. Increase the size of their hideout boxes as your boa grows.
Climbing Branches & Shelves
Some boa species are “semi-arboreal,” meaning that they enjoy climbing trees in their natural habitats. Climbing branches & shelves can be installed in their habitat to enrich the snake’s environment & encourage exercise.
Ensure that any branches installed in a boa’s habitat are sturdy & strong enough to support the snake’s body weight. Otherwise, the branch could topple over & potentially cause injury.
For larger/heavier snakes, shelves can be a safer & sturdier option than branches.
Moss
Add moistened sphagnum moss to the inside of a hideout box kept on the warm side of a boa’s enclosure to create a humid hide. Moss holds moisture well & can aid in healthy shedding. Moss should be replaced often to prevent mold from forming.
Plants & Terrarium Background
Adding plants & a terrarium background to a snake’s enclosure can enrich the snake’s environment & add some aesthetic flair. Make sure that any live plants added to the enclosure are non-toxic.
Cleaning & Maintenance for Boas
A boa’s habitat needs to be cleaned & disinfected at least once a week with either a habitat cleaner or a 3% bleach solution. Always wash your hands before & after handling your snake or the habitat’s contents, as all reptiles are potential carriers of infectious diseases.
To clean a boa’s habitat, take these steps:
Move the snake to a secure environment. Remove any old substrate, decor, & accessories from the habitat.
Scrub the empty tank & any furnishings with a reptile habitat cleaner or 3% bleach solution. The bleach solution should stay on the habitat for at least 10 minutes to ensure that the surfaces are disinfected properly. If using a commercial habitat cleaner, follow the manufacturer's instructions.
Rinse the habitat & accessories thoroughly with water, making sure to remove any trace amounts or residual smells left by the cleaning agent or bleach solution.
Allow the habitat & its contents to dry completely before placing new substrate & clean accessories into the habitat.
Return the snake to the clean habitat.
What Do Boa Constrictors Eat?
Boas feed on whole, thawed frozen rodents, such as mice & rats. Boas should always have access to fresh, clean water. Because boas are nocturnal feeders, offer food at night & use feeding tongs rather than fingers.
A nutritious & well-balanced boa diet consists of appropriately sized frozen rodents.
A boa’s ideal feeding schedule will depend on its age, size, & activity level. Juvenile boas should be fed once a week, while adults only need to be fed every one to 2 weeks. Baby snakes can be fed every other day.
Begin baby snakes on a diet of “pinkies,” or young & nearly hairless mice. Juveniles can be fed “hoppers,” which are about half the size of adult mice. As the boa grows into adulthood, they can be transitioned to a diet of larger mice & rats.
Prey should be around the same size as the snake’s width at mid-body. For example, if the snake’s midsection is 1.5 inches in diameter, their prey should also be no wider than 1.5 inches.
Fresh, clean water should always be available & replaced daily.
Since reptiles absorb water through their skin to stay hydrated, especially during shedding periods, their water dishes should be large & shallow enough to allow them to soak.
Pet Boa Constrictor Feeding Guidelines
Live prey should not be fed. While still alive, rodents can become aggressive & deal severe wounds that lead to life-threatening infections.
Ideally, feeding sessions should take place in a separate enclosure. That way, the snake will not learn to associate their pet parent’s hand or the opening of their usual habitat with feeding. Instead of their fingers, you should use long feeding tongs to offer food to your snake.
How To Thaw Frozen Prey
To thaw frozen prey, take these steps:
Remove the needed number of food items from the bag.
Put the frozen food in a sealed plastic bag & place it in a thawing container filled with cold water. The thawing container should only be used for preparing your reptile’s frozen meals.
Keep the food in the water until it thaws. Discard the cold water.
Refill the thawing container with warm water.
Place the thawed prey, still in the sealed plastic bag, in the warm water. Allow it to soak for 10–15 minutes before discarding the water.
Just before feeding, run nearly hot water over the thawed food to warm it above room temperature.
Remove the thawed food from the container & plastic bag.
Using feeding tongs, offer the food to the pet right away.
Remember: Never use a microwave to thaw or warm frozen rodents, & never offer food that's still frozen to a pet. Frozen food that is not consumed should never be re-frozen for future use, as this encourages bacteria to form in the food.
Avoid preparing frozen rodents in the same area that used to prepare food for personal consumption. If this is unavoidable, be sure to disinfect the area thoroughly after use.
Boa Snake Grooming & Care
Boas shed their skin regularly. Healthy snakes should shed their skin in one complete piece.
During shedding periods, keep your boa’s tank at a suitable humidity level (70%) to encourage a proper shed.
A snake’s eye caps, also called its spectacles, should come off with the rest of their shed skin. If the eye caps do not fall off, do not try to remove them & instead consult a veterinarian.
Boas may become irritable & lose interest in eating while shedding. They should not be handled during shedding.
Boas can soak themselves in a shallow, open water dish to help them shed. Damp paper towels & moistened sphagnum moss should be placed in the snake’s enclosure to encourage healthy shedding.
If they aren’t soaking on their own, soak your snake for 10–15 minutes, 2 to 3 times a week. Mist your boa daily to support proper hydration.
Boa Constrictor Veterinary Care
Annual Care
Boas should be seen by a veterinarian once annually. They can be transported using a ventilated plastic lidded bin, with or without a snake bag. These can be purchased or designed from materials in your home.
It is recommended to take pictures of their enclosure, diet, heaters, & lights so your veterinarian can evaluate their husbandry as part of the exam.
Signs of a Healthy Boa Snake
- Clean, clear, bright eyes
- Intact skin
- No swellings, lumps, or bumps
- Regular flicking of the tongue
- Relaxed demeanor
- Good muscle mass throughout body
- Ability to hold weight by wrapping around appropriate items
- Clean vent
When to Call a Vet
Eyes that are cloudy, dull, swollen, sunken, have discharge, or have stuck shed
Pink blisters, ulcerations, or other lesions on the skin
Stuck shed
Lumps, bumps, or swellings
Lethargy
Decreased appetite or anorexia
Paralysis of any portion of the body
Muscle atrophy
Discharge, staining, or protrusions at the vent
Common Illnesses in Boa Constrictors
Stomatitis (mouth rot) or other oral infections
Burns
Inclusion body disease
Skin infections
Internal & external parasites
Respiratory infections
Dystocia (stuck eggs)
Trauma
Dysecdysis (stuck shed)
Bite wounds from prey
GI obstruction
Constipation
GI infection
Boa Constrictor FAQs
Are boa constrictors easy to care for?
Boas can be tricky to care for because they grow so large & live for so long. It takes a large commitment to keep these animals, though their daily upkeep is simple if it’s within your skillset.
How do you take care of a boa?
Boas need special care taken to maintain the temperature & humidity levels of their enclosure, proper diet, & design of the enclosure. Their space needs to be secure, give them room to move, climb, & settle, in addition to having several hiding areas.
What do boas need in their tank?
Boas need a heavy water bowl large enough to soak in but not tip over, maintained humidity, & temperature levels using sensors, substrate, hide boxes, objects to climb, & heat bulbs to create a temperature gradient for basking.
What temperature should a boa be kept at?
A boa enclosure needs to be about 80–85 F with a basking area of about 90–95 F.
Do boa constrictors like to be held?
Most boas do like to be handled, especially with practice.
How often should I handle my boa?
Boas can be handled once daily, but nervous or new boas would prefer should be left alone initially, with handling practice only a couple times a week.
Pet Boa Constrictor Care Sheet | PetMD
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