Boa Constrictor
Boa spp.
🌍 Overview
Boa constrictors are large, heavy-bodied snakes distributed from Mexico through Central and South America to Caribbean island populations. As ambush predators they use constriction to subdue prey - squeezing until the prey's circulatory system stops, rather than suffocating it as once thought. They are viviparous (live-bearing), with females giving birth to litters of up to 60 live young.
📋 Quick Facts
Native Range
Mexico, Central America, South America, and Caribbean islands
Natural Habitat
Tropical rainforest, dry forest, scrubland, and savanna
Adult Size
5-13 feet (1.5-4 m); females significantly larger
Wild Diet
Rodents, birds, bats, lizards, and small mammals
Wild Lifespan
20-30 years
Conservation Status
Least Concern (IUCN); Appendix II (CITES)
⚖️ Compare
Boa Constrictor
Human
Adult Size
5-13 feet (1.5-4 m); females significantly larger
5-6 feet (150-185 cm); ~135-200 lbs
Wild Lifespan
20-30 years
~73 years (global average)
Wild Diet
Rodents, birds, bats, lizards, and small mammals
Omnivorous - eats just about anything
Native Range
Mexico, Central America, South America, and Caribbean islands
Global - originated in Africa roughly 300,000 years ago
Natural Habitat
Tropical rainforest, dry forest, scrubland, and savanna
Everywhere from arctic tundra to tropical megacities
Conservation Status
Least Concern (IUCN); Appendix II (CITES)
Least Concern (8+ billion and counting)
🧠 Test Yourself
What's the Boa Constrictor's native range?
🤩 Fun Facts
🐍 Not a Suffocation Squeeze
Boa constrictors don't kill by suffocating their prey. A study by biologist Scott Boback and colleagues found that constriction cuts off blood flow so fast that a prey animal's blood pressure crashes and it faints within seconds, well before it would ever suffocate. They also still carry tiny vestigial hind-leg spurs, leftover bones from ancestors that once walked on legs!
📖 Care Guide
Boa Constrictor Care Guide
The powerful, graceful heavyweight of the pet snake world!
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🤓 Did You Know?
Boa constrictors can sense the heartbeat of their prey using heat-sensitive pits. They literally feel your pulse!
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