New Guinea boa, viper boa

This species is a relatively short, roughly textured (keeled scales), thick-bodied snake with a seemingly lethargic demeanor. It presumably gets its common name "viper" from its superficial resemblance to the sympatric "death adder" (which isn't a viper anyway, but an elapid). In any event, the boa is not venomous, at least to any noticeable degree. Nevertheless this apparent mimicry results in it routinely being killed as a venomous snake (personal observation).