Boa Constrictor Feeding Guidelines & Mite Treatment
Feeding schedules vary based on age, size, sex, and subspecies. Always consider both your boa's current size and its expected adult size.
Growth Differences
- Colombian Boa Constrictor Imperator (BCI): Adults 6 to 9 ft. Grow quickly and tolerate slightly larger prey.
- Central American / Dwarf / Island BCI: Adults 3.5 to 6 ft. Require smaller, less frequent meals.
- Boa Constrictor Constrictor (BCC): Slower growing, adults 8 to 12 ft. Very sensitive digestion.
- Boa Constrictor Amarali (BCA): Slower growing, adults 8 ft+. Very sensitive digestion.
Choosing Prey Size
- Prey should be no larger than the thickest part of the boa's mid‑body.
- Dwarf BCI and BCC: choose prey slightly smaller than maximum girth.
- Colombian BCI: can take prey equal to their thickest body point.
Feeding Frequency
Colombian BCI
| Size | Frequency |
|---|---|
| 2.5 to 3 ft | Every 7+ days |
| 3 to 4.5 ft | Every 7 to 14 days |
| 4.5 to 6 ft | Every 14 to 18 days |
| 6 ft+ | Every 19 to 21 days |
| Breeding females | Every 3 to 5 days for 3 weeks before pairing |
Central American / Dwarf BCI
| Size | Frequency |
|---|---|
| Hatchlings | Every 8 to 10 days |
| 2.5 to 3 ft | Every 8 to 10 days |
| 3 to 4 ft | Every 10 days |
| 4+ ft | Every 12 to 14 days |
BCC & BCA
Hatchlings are extremely prone to regurgitation. Never overfeed.
| Age / Size | Frequency |
|---|---|
| Hatchlings (first year) | Every 10 days |
| 1 to 1.5 years / 3 to 5 ft | Every 10 to 14 days |
| 1.5+ years / 5+ ft | Every 14 to 21 days |
Handling After Feeding
- BCI: wait 2 to 3 days.
- BCC/BCA: wait 3 to 4+ days.
Body condition tips:
- Thin tail after cloaca: increase feeding slightly.
- Boa appears fat: increase interval between meals.
- Genetics influence growth regardless of feeding schedule.
If Your Boa Regurgitates
Frequent regurgitation can become fatal. Do not feed again for at least 2 weeks.
- After 2 weeks: feed small prey, wait 2 more weeks.
- Repeat small prey two more times, each 2 weeks apart.
- Feed medium prey, wait 12 days. Repeat once.
- Feed large prey and resume normal schedule.
Feeding Methods
Live Prey
- May carry parasites.
- Can injure or kill your boa.
- Rats can inflict severe bites.
- Use only if necessary and always supervise.
The image below shows injuries caused by a rat left overnight with a boa.
Pre-Killed
- Cannot fight back.
- Warm and natural smelling.
- May still carry parasites.
Frozen/Thawed (Recommended)
- No risk of injury.
- Cheaper in bulk.
- Freezing kills parasites (eggs may survive).
- Easy storage and low odor.
Safe Thawing Process
- Thaw in cold water until flexible.
- Warm in warm water for 10 minutes.
- Briefly warm in hot water for 1 minute.
- Never place frozen prey directly into hot water.
- Drip dry and offer wet prey to boa,
- Use tongs to offer prey so you don't get bit.
Feeding in the Enclosure
- Feeding in a separate box is unnecessary.
- Increases risk of accidental bites.
- Moving after feeding increases regurgitation risk.
- Because you won’t be opening the cage again for several days, any lingering prey scent will have dissipated, reducing the chance of triggering a feeding response later.
Mite Treatment
Bedding Spray (0.50% Permethrin)
- Never spray directly on the boa.
- Remove boa and water bowl.
- Lightly fog enclosure; close 1 to 2 hours.
- Return boa after airing out.
- Replace water bowl after 1 to 2 days.
- Effective for 3 to 4 weeks.
Do not use permethrin around turtles, amphibians, insects, tarantulas, or any arachnids.
Sevin Dust 5%®
- Place boa in a tub; apply very light dusting overnight.
- Clean cage and accessories with bleach water; dry thoroughly.
- Rinse boa next day and return to cage.
- Light dusting in substrate for 2 weeks (or use newspaper).
- Clean cage again after 2 weeks, and repeat light dusting of substrate.
- After another 2 weeks complete a final cleaning of the cage and remove all Sevin Dust.
Change water daily during treatment. I have been using Sevin Dust® safely since 1979 and is sold at most home and garden stores. My veterinarian recommended the product to me. The labeling says it's safer for use on dogs and cats.