Royal python or boa constrictor: which to choose as a first snake?
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
For a first snake, the ball python (Python regius) remains the more sensible choice: it tops out around 1.2 m as an adult and is happy in a compact terrarium. A study by Hollandt, Baur and Wöhr, published in 2021 in the journal PLOS ONE, compared ball pythons housed in bare rack systems versus furnished terrariums with hides and clutter, and found that furnishing matters far more for welfare than floor space alone (see the study). A boa constrictor (Boa constrictor), on the other hand, can exceed 2.5 m and changes the whole equation on space and budget. Find all our setup pointers in the bedding and habitat section.
Contents · 5 sections
What tank size does each one need?
An adult ball python is comfortable in a 90-120 cm long terrarium, compatible with a standard piece of furniture. An adult boa constrictor, though, often needs 1.8-2.5 m depending on the bloodline: impossible to improvise in a small living room, and usually means a custom-built enclosure.
What starting and running budget?
Budget 250-400 € for a complete ball python kit (terrarium, heating, thermostat, hides), then 10-15 € a month for frozen rodents. For an adult boa, the terrarium alone can exceed 500-800 €, heating such a large volume costs more year-round, and prey grows bigger and pricier as the animal grows.
What temperament and handling level?
Both species are known to be calm once settled. A stressed ball python curls into a ball and almost never bites. A boa constrictor is usually just as placid, but its adult strength calls for two-handed handling, sometimes two people for the largest individuals — a factor to plan for before buying, not after.
Which fits your home and experience?
In a studio or modest apartment, the ball python is almost the default pick. A boa constrictor suits a keeper who already has a dedicated room, and who has already handled medium-sized snakes.
- Space: a compact terrarium for the ball python, a very large enclosure for an adult boa.
- Starting budget: roughly twice as high for a well-set-up boa constrictor.
- Growth: the ball python reaches adult size faster and stays predictable; a boa keeps growing for several years.
- Recommended experience: ball python for a first snake, boa constrictor for a keeper already comfortable with handling.
Once you've chosen, furnishing matters more than terrarium size alone; see also our comparison on choosing another beginner reptile and the real budget for an easy reptile.
Frequently asked questions
Can a boa constrictor live in a step-up terrarium like a ball python?
In theory yes, but the adult size gap is such that a boa usually needs at least two enclosure upgrades before adulthood, against one for a ball python.
Is the ball python easier to feed than a boa constrictor?
Yes: it stays on modest mice, then rats, its whole life, while an adult boa may need much larger, pricier prey.
Do you need a permit to keep a boa constrictor in France?
It isn't regulated like the largest constrictors, but rules change: always check the current legal status with your exotics vet before buying.
See it in the Planète Pets shop: Stick-on digital thermometer for aquarium and terrarium glass (€18.90) · the whole shop
This guide is part of Planète Pets’s Reptiles universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
