Red Tail Boas

Also known as boa constrictors, these snakes aren't for everyone

Red tail boa on a branch with leaves in the background

Getty Images / JH Pete Carmichael

The red tail boa, also referred to as a boa constrictor, is a very common choices as a pet snake. Red tail boas can be easily acquired from a breeder, pet store, or reptile show and are identifiable by their red patterned coloration on the end of their tail.

Red tail boas are native to Brazil and nearby areas where they spend their time in rain forests and lowlands and while their environments vary they are considered moderately arboreal.

Behavior and Temperament of Red Tail Boas

The red tail boa can measure as long as 11 feet and can weigh as much as 60 pounds when it is fully grown. They will live 20 to 30+ years in captivity if well cared for and are big snakes for the average pet owner. Red tail boas need to be seriously considered before being purchased due to their strength, size, the amount they eat, and their ability to constrict. They are not legal to own everywhere so be sure to check your local laws as well.

The reason red tail boas are so popular is due in part to their typically docile temperament. They aren't usually aggressive snakes but even if they aren't upset they can do damage to a person quite easily by constricting (to hang on to someone's hand, neck, or arm) or biting you if they think your hand is food.

Housing Red Tail Boas

A 11-foot snake needs a little room to move about and stretch out fully. While snakes feel secure when they are hiding under something and are able to curl up, they should also be able to fully stretch out end to end without touching the sides. An enclosure that provides a minimum of 10 feet of floor space, is a couple of feet high, and a couple of feet wide is sufficient for an adult red tail boa.

Perhaps the most important thing about an enclosure for a red tail boa is how secure it needs to be. All snakes are escape artists and will push through unlocked lids and squeeze through small openings. All snake enclosures should have locks or latches to prevent an escape, which can be dangerous to both the snake and the people living in the house. Placing a red tail boa inside a tied pillowcase works well for transporting or to temporarily hold them while cleaning their enclosure.

Since red tail boas come from a tropical environment, the ease of maintaining humidity levels should be taken into consideration when setting up a cage. Glass or plexiglass sides and lids help to keep humidity higher (needs to be 60-80%) in an enclosure but you will want to make sure enough air is still able to circulate inside and that nothing will melt from the heating devices.

Your snake needs a large, sturdy bowl for water. It should be able to easily fit its entire body in the bowl to soak. Red tail boas should also have a hide box or place to escape the heat and to curl up in a quiet, hidden place whenever they want to. Many owners use wooden or cardboard boxes for hides and replace or clean them as needed. Tree branches may or may not be used by your snake.

The kind of bedding you choose should be easy to clean since a large snake produces quite a large amount of waste material. Paper towels are great for young red tail boas and reptile cage carpet or indoor/outdoor carpet cut into removable sections are easy to clean when you have an adult snake. Other materials that are often used include reptile bark, reptile dirt mixtures, and other natural floor coverings. Sand is not appropriate for red tail boas; they may ingest it causing a digestive impaction.

Lighting and Heating

Since red tail boas are from Brazil they like their environments warm. A basking spot of around 90 -92 degrees Fahrenheit should be maintained using heat lights or other means. But avoid using hot rocks because they can cause thermal burns in a snake. The rest of the tank can be in the mid-80s and at night it's safe for the temperature drops into the lower 80's but not required. You can use either a thermostat or thermal temperature gun to monitor temperatures in your snakes environment.

Heat lights, ceramic heat emitters, under tank heaters, and incubator cages are all acceptable means of heating a snake cage. Just make sure your snake cannot get to the heating element and burn itself.

UVB lighting is not mandatory for red tail boas, but if you want to offer supplemental white light during the day, a UVB light is a great option. It may even help stimulate appetite, decrease stress and make your snake an overall happier, more active snake.

Food and Water

Juvenile red tail boas will eat fuzzies, then mice, then rats, and once they reach adulthood, they will be eating rabbits and large rats. When 3 feet in length, they can eat small rats and once 5-7 feet, they are now able to move up in size of prey to large rats. Prey items should be killed prior to feeding them to your snake and offered in an enclosure used only for feeding.

Do not feed your snake in its regular cage; this will decrease the likelihood of the snake thinking you are food and accidentally biting you or ingesting its substrate. The feeding tank should be covered with a towel while feeding to provide a sense of security to your snake, or you can place your snake's hide box in the feeding tank while feeding.

Common Health Problems

The most serious disease that can affect boa constrictors is inclusion body disease or IBD. This is a fatal retrovirus, akin to HIV in humans. This virus can lay dormant for years before the snake shows any sign of illness. This disease can be transmitted from snake to snake via direct contact, indirectly in the air, and via mites, which carry infected bodily fluids. This is why it's a good idea to keep multiple pet snakes separated if possible. 

IBD is marked by poor appetite and excessive saliva, and in serious or more advanced cases, IBD causes snakes to lose control of their bodily movements.

Red tail boas also are susceptible to respiratory infections, marked by wheezing and nasal discharge. A foamy discharge from a snake's mouth usually indicates pneumonia, which requires immediate treatment. 

Scale rot and blister disease are both common in boa constrictors, with both usually caused by unsanitary conditions. Blister disease may appear like burns on the snake's skin and is usually caused by overheated cages or a lack of humidity. 

All of these ailments should receive treatment from a veterinarian who specializes in reptiles.

Choosing a Red Tail Boa

Red tail boas are large, strong, long-lived snakes and aren't for everyone. Feeding them can become more expensive as they get larger, and so will the time it takes to clean their cage. Therefore, make sure you are prepared and know what to expect before taking home any pet, especially one that lives up to 30 years.

Similar Species to the Red Tail Boa

If you're undecided about which boa is right for you, here are some other options to consider:

You also may want to check out all of our other snake breed profiles.

Watch Now: Pet Snakes: Names and Fun Facts

Article Sources
The Spruce Pets uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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  4. Parrish, Kate et al. Nidoviruses in Reptiles: A Review. Frontiers in Veterinary Science, vol. 8, pp. 1045, 2021. doi:10.3389/fvets.2021.733404

  5. Janos, Degi et al. A case of blister disease to Boa constrictor. Scientific Works - University of Agronomical Sciences and Veterinary Medicine, vol. 58, pp. 89-92, 2012.