Boa constrictor
Boa constrictor
— Where the name comes from
Boa is a Latin name for a great serpent, mentioned by Pliny, perhaps linked to bos, the ox, for the bulk. Constrictor, Latin, “the one that squeezes”: it kills by wrapping the prey in its coils. It is one of the few animals whose scientific name is also its common one.
— Facts
- Group
- Reptiles · Reptilia
- Order
- Squamates
- Habitat
- Rainforest, savannah, semi-desert
- Range
- Central and South America
- Size
- 2–4 m, 10–27 kg
- Diet
- Carnivore — medium-sized birds and mammals
- Lifespan
- 20–30 years
— Characteristics
- 01
It does not crush bones: it tightens until the prey can neither breathe nor circulate blood.
- 02
It lays no eggs: it gives birth to fully formed young, wrapped in a membrane.
- 03
It senses the body heat of prey through sensors along the lip.
— What sets it apart
Constricting snakes were long thought to kill by suffocation, but measurements have revealed something faster and more efficient: the squeeze stops the circulation, blood pressure collapses, and the animal loses consciousness within seconds. The snake “feels” the prey’s heartbeat against its coils and lets go only when it stops. It does not wait for suffocation: it waits for the heart to halt.
