A complex mixture of polypeptide components. Neurotoxicity is the most clinically relevant.
Histamine and other components potentiate localized swelling and vascular permeability
Several neurotoxic components that activate sodium channels, potentiating action potentials and causing uncontrolled muscle contractions.
Armed spider bite
Hymenoptera stings 
Octopus bite
Mammalian bites
Shark bite
Closed fist infection 
Funnel-web spider bite
Dog bite