Snakes are a rather small and typically weak species of animal. However, some are quite deadly due to their poisons.
Most snakes are non-aggressive without provocation, but some are quite hostile and will attack first.
Snakes have many variations from your standard snake to to the much larger Killer Snakes.
As they are animals most worlds contain snakes. As such the following list will be quite long.
Worlds that are known to have various forms of snakes are as follows:
Interworld System of Planets
Final Fantasy Universe
Dead or Alive
Full Metal Alchemist
Ghost in the Shell
Neon Genesis Evangellion
Yu Yu Hakusho
Rosario + Vampire
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