Venomous snakes are
species of the
suborder Serpentes that are capable of producing
venom, which is used primarily for immobilizing prey and defense mostly via mechanical injection by
fangs. Common venomous snakes include the
families Elapidae,
Viperidae,
Atractaspididae, and some of the
Colubridae. The toxicity of them is mainly indicated by murine , while multifarious factors are considered to judge their potential danger to humans.