Boa Constrictor (Boa constrictor)
The Boa constrictor is a species of large, heavy-bodied snake. It is a member of the family Boidae found in North, Central, and South America, as well as some islands in the Caribbean. Ten subspecies are currently recognized, although some of these are controversial. There is clear sexual dimorphism seen in the species, with females generally being larger in both length and girth than males. As such, the average size of a mature female boa is between 2.1–3.0 m, whilst it is 1.8–2.4 m for the males. The coloring of boa constrictors can vary greatly depending on the locality. Boa constrictors will generally live on their own, and not interact with any other snakes unless they want to mate. They are nocturnal; however, they may bask during the day when night-time temperatures are too low. Boa constrictors will strike when they perceive a threat. Their bite can be painful, especially from large snakes, but is rarely dangerous to humans. Its prey includes a wide variety of small to medium sized mammals and birds. The boa will first strike at the prey, grabbing it with its teeth; it then proceeds to constrict the prey until death before consuming it whole.