Virus is a microscopic organism that lives in a cell of another living thing. Although viruses are extremely small and simple, they are a major cause of disease. Some viruses infect human beings with such diseases as measles, influenza, and the common cold.
Passive Mobs. Passive mobs are composed of creatures that will never, under any circumstances, attack the player. Some passive mobs can be bred to create more of them, e.g. pigs can be bred to effectively farm them.
I've officially taken over the helm with Eddie's kind blessings. As of version 3.0.1 Micdoodle has joined the developer team. This mod adds a mob called Chocobo to the game. This includes different coloured mob types with different attributes in their grown-up and juvenile form.