The Boomslang is mostly active during the day and spends most of its time in trees and shrubs where it actively hunts for fledgling birds and chameleons. Boomslangs have also been observed hunting for frogs along streams and puddles.

Boomslangs have a short stubby head with a large eye. The colour varies; males are often bright green with black edged scales while females are light brown to grey. Juveniles are grey above with blue and orange speckles between the scales and the neck area is often yellow to orange, which is especially prominent when inflating the neck area. The eyes of juveniles are bright emerald green.

Highly venomous.