"Poisonous snake" redirects here. For true poisonous snakes, see Rhabdophis.

Venomous snakes are snakes which have venom glands and specialized teeth for the injection of venom. Members of the families Elapidae, Viperidae, Hydrophiidae, and Atractaspididae (and some from Colubridae as well) are major venomous snakes.