Named for both their catlike eyes (which are typical for all snakes of the Boiga
genus) and striking colouration, B. cyanea
is quite a dramatic appearance; most of the body is green while parts of its head and especially its chin is tinted in an ardent, bluish hue. Similar to Black Mambas, they have a black mouth which is aggressively presented when harrassed.
Juveniles look remarkably different from grown animals; only their head is coloured green while the rest of the body is of a reddish brown (adults eventually turn completely green in time). Like all snakes of the Boiga
genus, it is rear-fanged but only midly venomous.
In German, this snake is called "Grüne Nachtbaumnatter" which translates to "Green Night Tree Snake" (but is also named "Grüne Katzen(augen)natter", which is pretty much identical to its English common name). In Thai, its name refers to the taro plant whose green-bluish/cyan colour of its leaves is a spot on resemblance.