Boiga irregularis


The Brown Tree Snake has a slender body and a broad head which is noticeably wider than its narrow heck. The eyes are large with vertical pupils. In eastern populations, the colour of the back and sides are greyish-brown to reddish-brown with irregular dark-brown or blackish bands. In the north-western populations , the colour of the back and sides is cream or yellowish with strongly contrasting brown to reddish crossbands. The average size of a Brown Tree Snake is 1.4 metres.



Although the Brown Tree Snake is venomous, it's bite is not dangerous to humans.


Inhabits rainforests, sclerophyll forests, humid woodlands, mangrove forests, rocky outcrops and occasionally buildings.


Mammals , birds and their eggs, lizards and frogs.


A female Brown Tree Snake lays 3-11 eggs in moist soil deep in a rock crevice or in the decomposing interior of hollow timber.