

Brown Tree Snake
Boiga irregularis
The Brown Tree Snake has a large head with eyes that are large and protruding with vertical pupils. The head is distinct from the narrow neck. They are brown above with ragged-edged, darker cross bands on the back and sides (eastern Australia). Northern Australian specimens are cream with bold reddish bands. The belly is cream to orange. This snake grows to 2 m. Midbody scale rows 19–23, ventrals 225–265; anal single; subcaudals divided 85–130. A common species that lives in a broad range of habitats including open forests, rainforests, mangroves, rock escarpments, rural and urban areas. Australian Brown Tree Snakes are not generally considered dangerous. However, recent studies may indicate a need to re-evaluate this species' medical significance. Bites in Guam have produced severe symptoms with patients receiving ventilation or intubation to assist breathing. Such cases involve small children and large snakes. The venom has myotoxic and neurotoxic components. Apply first aid and seek urgent medical attention for all suspected bites.