Boa constrictor Boa constrictor
Sizeup to 4m
carnivorous (live mammals)
tropical forest, savannah
Central and South America
Boas are ovoviviparous: females incubate 20–50 eggs inside their bodies and give birth to fully formed young.
Unlike other members of the Boidae family, boa constrictors do not have thermo-sensitive pits, but they can recognize warm-blooded prey thanks to the infrared-sensitive scales on the lips under their nostrils.
Tree-dwelling and nocturnal, boa constrictors bite their prey before squeezing them to death.