he Boidae (boas) are a wide-ranging group occupying fossorial, ground-dwelling, and arboreal (tree-dwelling) habitats from the Americas, Central Africa, South Asia, Madagascar, the West Indies, and the Pacific Islands.
Most boa constrictors give live birth. Boas and pythons are considered primitive because they have two lungs and vestigial leg bones, but boas have fewer bones in their head and fewer teeth.
An anaconda is a type of boa that can reach 30 feet, but most boas stay at 18 feet or less.
Boas are commonly referred to as boas, red-tailed boa, and common boa