Boiga dendrophila, commonly called the mangrove snake or gold-ringed cat snake, is a species of rear-fanged colubrid from southeast Asia. It is one of the biggest cat snake species, averaging 6–8 feet (1.8–2.4 m) in length. It is considered mildy venomous. Although moderate envenomations resulting in intense swelling have been reported, there has never been a confirmed fatality.