Serpent

The serpent is a common mob (like a chicken) that is hostile. It's dimensions are 5x1x1. There are several variations:
 * Red
 * Rattler
 * Sea
 * Yellow
 * Black
 * Mountain
 * Giant(20x4x4)
 * Baby
 * Radioactive
 * Mutated
 * Headless
 * Hypnotic
 * Potion
 * Peaceful(not hostile)