Boidae is a family of primitive non-venomous snakes found in the Americas, Africa, Europe, Asia and some Pacific Islands. The females are usually larger than the males. Two subfamilies (Boinae and Erycinae), 8 genera, and 43 species comprise this family. The other family of giant snakes are the pythonidae

Subfamilies
The boinae subfamily of the boidae family are found throughout Central and South America, Africa and Southeast Asia. There are five genera and 28 species that are recognized. The Erycinae subfamily of the boidae family is found in Europe, Asia Minor, Africa, Arabia, central Asia, Southwest Asia, India, Sri Lanks and western North America. There are three genera and fifteen species recognized.

Most boidae are ovoviviparous