Cobra is the common name of various elapid snakes, most of which belong to the genus Naja.[1]

All of the known cobras are venomous and many are capable of rearing upwards and producing a hood when threatened.[2]

The false water cobra (Hydrodynastes gigas) is the only "cobra" species that is not a member of the Elapidae. It does not rear upwards, produces only a slight flattening of the neck when threatened, and is only mildly venomous.[5]:p.53

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